| 1W/2W | one-way, two-way (Doppler Tracking) |
| 2D | Two-Dimensional |
| 3D | Three-Dimensional |
| 3GL | Third Generation Language |
| 4DDA | 4-Dimensional Data Assimilation |
| 4GL | Fourth Generation Language |
| A | Back to top |
| A&E | Activation and Evaluation |
| A&R | Automation and Robotics |
| A&SG | Avionics & Surveillance Group |
|
| A/D | Analog to Digital |
| A/S | Anti-Spoofing |
| A/SA | Arid/Semi-Arid |
| A/SWSWT | ADEOS II/Seawinds Science Working Team |
| AA | Astronomical Almanac |
| AA | Ancillary Data Access |
| AAA | Alarms, Alerts and Advisories |
| AABW | Antarctic Bottom Water |
| AAG | Association of American Geographers |
| AAL | Asynchronous Transfer Mode Adaptation Layer |
| AALE | Adjusted Annual Loss Expectancy |
| AAOE | Airborne Antarctic Ozone Experiment |
| AAP | Advanced Archival Products |
| AAQS | Ambient Air Quality Standards |
| AASE | Airborne Arctic Stratospheric Expedition |
| AATSR | Advanced Along-Track Scanning Radiometer (ESA) |
| AB | Advanced Bus |
| ABCR | As Built Configuration Report |
| ABE | Archive Browser and Extractor |
| ABI | Application BInary Interface |
| ABI | Advanced Baseline Image |
| ABL | Allocated Baseline |
| ABLE | Atmospheric Boundary Layer Experiment |
| ABOM | Australian Bureau of Meteorology |
| ABR | Available Bit Rate |
| ABS | Oxygen A-Band Spectrometer |
| AC | Alternating Current |
| AC | Atmospheric Corrector |
| ACAD | Attitude Control and Determination |
| ACBM | Autonomous Command Block Memory |
| ACCA | Automated Cloud Cover Assessment |
| ACD | Architectural Control Document |
| ACDA | Asociación Costarricense Para El Desarrollo Aerospacial (Costa Rican Association for Aerospace Development) |
| ACDS | Attitude Control Determination Subsystem |
| ACE | Aerosol Characterization Experiment |
| ACE | Attitude Control Electronics |
| ACE | Advanced Composition Explorer |
| ACE | Array Clamp Electronics |
| ACE | Analog Control Electronics |
| ACF | Automated Control Function |
| ACFG | Management Agent Configuration File |
| ACI | Allocated Configuration Identification |
| ACI | Administratively Controlled Information |
| ACL | Access Control List |
| ACMAP | Atmospheric Chemistry and Modeling Analysis Program |
| ACMHW | Access and Control Management Hardware [Configuration Item] |
| ACP | Archive Control Process |
| ACQ | Acquisition |
| ACR | Active Caviry Radiometer |
| ACRIM | Active Cavity Radiometer Irradiance Monitor |
| ACRIMSAT | Active Cavity Radiometer Irradiance Monitor Satellite |
| ACRS/TLAS | Automated Conflice Resolution System/TDRSS Look Angle System |
| ACS | Attitude Control System |
| ACS | Archived Catalog System (ASF) |
| ACS | Activity Schedule |
| ACS | Advanced Camera for Surveys |
| ACS | Automated Cartridge System |
| ACSE | Association Control Service Element |
| ACSE | Attitude Control System Electronics |
| ACSLS | Automated Cartridge System Library Software |
| ACSYS | Arctic Climate System Study |
| ACTS | Advanced Communication Technology Satellite |
| ACU | Accelerometer Unit |
| ACU | Antenna Control Unit |
| ACWP | Actual Cost of Work Performed |
| AD | Acceptance Check/TC Data |
| AD | Applicable Document |
| ADA | Angular Displacement Assembly |
| ADA | Array Drive Assembly |
| ADABL | As Designed As Built List |
| ADAC | Attitude Determination and Control |
| ADADS | ASTER Data Archive and Distribution System |
| ADALT | Advanced Radar Altimeter |
| ADC | Affiliated Data Center |
| ADC | Analog to Digital Converter |
| ADC | After Date of Contract |
| ADCLS | Advanced Data Collection and Location System |
| ADCS | Attitude Determination and Control Subsystem |
| ADD | Architecture Description Document |
| ADD | Architecture Design Document |
| ADE | Array Drive Electronics |
| ADEOS | Advanced Earth Observing Satellite (Japan) |
| ADEPT | Advanced Design Electronic Packaging Technique |
| ADG | Acquisition Data Generator |
| ADGE | Air Defense Ground Environment |
| ADM | Administrative Message |
| ADM | Antenna Drive Mechanism |
| ADM | Antenna Deployment Mechanism |
| ADM | Angular Distribution Model |
| ADN | ASTER Data Network |
| ADO | Active Data Object |
| ADP | Automated Data Processing |
| ADPE | Automated Data Processing Equipment |
| ADRO | Application Development Research Opportunity |
| ADRS | Automated Defect Reporting System |
| ADS | Archive and Distribution Segment |
| ADS | Attitude Displacement Sensors |
| ADS | Archive Data Set |
| ADS | Attitude Determination Subsystem |
| ADS | Attitude Determination System |
| ADS | Ancillary Data Service |
| ADS | Angular Displacement Sensor |
| ADSERV | Advertising Service |
| ADSHW | Advertising Service Hardware [Configuration Item] |
| ADSL | Asymmetric DSL |
| ADSRV | Advertising Service CSCI |
| ADT | Abstract Data Type |
| ADT | Architectural Development Team |
| ADT | Activity Definer Tool |
| AE | Atmospheric Explorer |
| AEAP | Atmospheric Effects of Aviation Program |
| AEB | Agência Espacial Brasileira (Brazilian Space Agency) |
| AEDP | Astrometry and Engineering Data Processing |
| AEI | AEI (Solar Array DC-Motor Manufacturer) - subcontractor to Fokker Space |
| AEM | Application Explorer Mission |
| AEM | Analog Electronics Module (MODIS) |
| AEP | Application Environment Profile |
| AER | Atmospheric and Environmental Research |
| AERI | Atmospheric Emitted Radiance Interferometer |
| AEROnet | Aeronautics Network |
| AERONET | Aerosol Robotic Network |
| AES | Application Environment Specification |
| AES | Aerojet Electro Systems |
| AES | Atmospheric Environment Service |
| AESA | Atmospheric Effects of Stratospheric Aircraft Program |
| AESOPS | Antarctic Environment Southern Ocean Process Study |
| AESP | Aerospace Education Services Program |
| AET | Actual Evapo-Transpiration |
| AETD | Applied Engineering and Technology Directorate |
| AF | Audio Frequency |
| AFB | Air Force Base |
| AFC | Application Foundation Class (Microsoft) |
| AFD | Architecture Flow Diagrams |
| AFE | Annual Frequency Estimate |
| AFGWC | Air Force Global Weather Channel |
| AFM | Aura FSW Maintenance |
| AFM | Award Fee Milestone |
| AFN | Acquisition Failure Notification |
| AFPRO | Air Force Plant and Representative Office |
| AFS | Andrews File System |
| AFSCF | Air Force Satellite Control Facility |
| AFSCN | Air Force Satellite Control Network |
| AFWA | Air Force Weather Agency |
| AGAGE | Advanced Global Atmospheric Gases Experiment |
| AGC | Automatic Gain Control |
| AGCI | Aspen Global Change Institute |
| AGCM | Atmospheric General Circulation Model |
| AGDS | ASTER Ground Data System |
| AGE | Aerospace Ground Equipment |
| AGE | Associated Ground Elements |
| AGL | Above Ground Level |
| AGN | Active Galactic Nuclei |
| AGP | Ancillary Geographic Product (MISR) |
| AGS | ASTER Ground System |
| AGS | Alaska Ground Station |
| AGU | American Geophysical Union |
| AHAP | Alaska High-Altitude aerial Photography |
| AHM | Attitude Hold Mode |
| AHWGC | Ad Hoc Working Group on Consumers |
| AHWGP | Ad Hoc Working Group on Production |
| AHWGP | Ad Hoc Working Group on Processing |
|
| AI&T | Algorithm Integration and Test |
| AIAA | American Institute of Aeronautics and Astronautics |
| AICC | ASTER Instrument Control Center |
| AID | Ada Information Description |
| AID | Architecture Interconnection Diagram |
| AIDJEX | Arctic Ice Dynamics Joint Experiment |
| AIF | Algorithm Integration Facility (UK) |
|
| AIIM | Association for Information and Image Management |
| AIM | Automated Information Management |
| AIM | Assurance Implementation Matrix |
| AIMCO | Automated Information Management Council |
| AIR | Airborne Imaging Radar |
| AirMISR | Airborne Multi-Angle Imaging Spectroradiometer |
| AIRS | Atmospheric Infrared Sounder |
| AIRSAR | Aircraft Synthetic Aperture Radar |
| AIS | Airborne Imaging Spectrometer |
| AIS | Automated Information Security |
| AIS | Automated Information System |
| AISC | Assessment and Information Services Center |
| AISO | Automated Information Security Officer |
| AIT | Algorithm Integration Team |
| AIT | Algorithm Integration and Test |
| AIT | Assembly, Integration & Test (Component Level) |
| AITHW | Algorithm Integration and Test Hardware [Configuration Item] |
| AITT | Algorithm Integration and Test Team |
| AITTL | Algorithm Integration and Test CSCI |
| ALDC | Adaptive Lossless Data Compression |
| ALDT | Administrative Logistics Delay Time |
| ALE | Annual Loss Expectancy |
| ALE | Atmospheric Lifetime Experiment |
| ALEXIS | Array of Low Energy X-ray Imaging Sensors |
| ALI | Advanced Land Imager |
| ALOG | Application Log File |
| ALOS | Advanced Land Observation Satellite |
| ALPEX | Alpine Experiment |
| ALRSS | Advanced Land Remote Sensing System |
| ALS | Archimedial Log Spiral (Omni Antenna) |
| ALTA | Active Long-Term Archive |
| ALTMS | Airborne Lidar Topographic Mapping System |
| AM | Assurance Manager |
| AMAO | Advanced Missions Analysis Office |
| AMASS | Archival Management And Storage System |
| AMD | Advanced Microdevices (Company) |
| AMDS | Automated Message Distribution System |
| AME | Antenna Mounted Equipment |
| AMEX | Australian Monsoon Experiment |
| AMI | Active Microwave Instrument |
| AMIP | Atmospheric Model Intercomparison Project |
| AML | Automated Media Library |
| AMLS | Array MLS |
| AMMS | Acquisition and Material Management System |
| AMOC | Am Mission Operations Center |
| AMP | Assurance Management Plan |
| AMPE | Automated Message Processing Exchange |
| AMPR | Advanced Microwave Precipitation Radiometer |
| AMPTE | Active Magnetospheric Particle Tracer Explorer |
| AMPU | Attitude Maneuver Planning Utility |
| AMR | Altimetry Microwave Radiometer |
| AMRC | Auxiliary Master Reference Cube |
| AMRIR | Advanced Medium Resolution Imaging Radiometer |
| AMS | American Meteorological Society |
| AMS | Automated Meteorological Station |
| AMS | Automated Message System |
| AMS | Archive Management Software |
| AMS | ASTER Mission Simulator |
| AMSR | Advanced Microwave Sounding Radiometer |
| AMSR | Advanced Microwave Scanning Radiometer |
| AMSR-CU | Advanced Microwave Scanning Radiometer - Control Unit |
| AMSR-E | Advanced Microwave Scanning Radiometer for EOS |
| AMSR-SU | Advanced Microwave Scanning Radiometer - Sensor Unit |
| AMSU | Advanced Microwave Sounding Unit |
| AMSU-A | Advanced Microwave Sounding Unit-A |
| AMSU-A1 | AMSU-A1 Module - Receives V and W Band Frequencies on Channels 3-15 |
| AMSU-A2 | AMSU-A2 Module - Receives K and Ka Band Frequencies on Channels 1 & 2 |
| AMSU-B | Advanced Microwave Sounding Unit-B (Earlier MHS, Became HSB) |
| AMTS | Advanced Meteorological Temperature Sounder |
| AMTS | Advanced Moisture and Temperature Sounder |
|
| ANIR | Advanced Networking Infrastructure the Research |
| ANSI | American National Standards Institute |
| ANZONE | Antarctic Zonal Experiment |
| AO | Announcement of Opportunity |
| AOC | Award Of Contract |
| AOC | Archive Operational Capability |
| AOCS | Attitude the Orbit Control System |
| AOD | Aerosol Optical Depth |
| AOI | Area Of Interest |
| AOI | Angle Of Incidence |
| AOIPS | Atmospheric and Oceanographic Information Processing System |
| AOL | Airborne Oceanographic Lidar |
| AOS | Acquisition Of Signal |
| AOS | Area Of Search |
| AOS | Advanced Orbiting System |
| AOS | Archive and Operations System (ASF) |
| AOS | ASTER Operations Segment |
| AOSP | Advanced On-Board Signal Processor |
| AOT | ASTER Operations Team |
| AP | Attached Payload |
| AP | Algorithm Package |
| AP | Accounts Payable |
| APA | Allowance for Program Adjustment |
| APACM | Atmospherics Physics And Chemistry Monitors |
| APAE | Attached Payload Accommodation Equipment |
| APAFO | Advanced Particles And Fields Observatory |
| APAR | Absorbed Photosynthetic Active Radiation |
| APC | Aft payload Capsule |
| APC | Access/Process Coordinators |
| APCD | Air Pollution Control District |
| APDU | Application Protocol Data Unit |
| APFZ | Antarctic Polar Frontal Zone |
| API | Application Programming Interface |
| APID | Application Process Identifier |
| APID | Application Packet Identifier |
| APL | Applied Physics Laboratory (Johns Hopkins University) |
| APOPP | Aerosol Physical the Optical Properties Product |
| APP | Applications Portability Profile |
| APR | Applied Parallel Research |
| APRP | Adaptive Pattern Recognition Processing |
| APS | Action Per Second |
| APS | Acquisition Planning System |
| APT | Automatic Picture Transmission |
| APT | Advanced Picture Taking |
| AQA | Algorithm Quality Assurance |
| AQAHW | Algorithm QA Hardware (Configuration Item) |
| AQAHWCI | Algorithm Quality Assurance Hardware Configuration Item |
| AQPSK | Asynchronous Quadrature Phase Shift Keying |
| AR | Accounts Receivable |
| AR | Acquire Request |
| AR | Acceptance Review |
| AR | Action Request |
| AR | Axial Ratio |
| ARA | Appletalk Remote Access |
| ARA | Atmospheric Radiation Analysis |
| ARA | Acquire Request Acknowledgment |
| ARAM | Automated Reliability/ Availability/ Maintainability |
| ARC | Ames Research Center |
| ARC | Antarctic Research Center |
| ARC | Applied Research Corporation (ECS Team) |
| ARDB | Automated Requirements Database |
| ARE | Array Regulator Electronics (EPS) |
| ARE | Array Regulator Electronics |
| ARESE | Arm Enhanced Shortwave Experiment |
| ARF | Action Request Form |
| ARGOS | Argos Data Collection and Location System |
| ARIA | Advanced Range Instrumentation Aircraft |
| ARICS | Accounts Receivable Invoice Control System |
| ARIN | Aerospace Resource Information Network |
| ARISTOTELES | Applications and Research Involving Space Technologies Observing The Earths' field from Low Earth orbiting Satellite |
| ARL | Anomaly Resolution Lead |
| ARM | Atmospheric Radiation Measurement (DOE Program) |
| ARM | Array Regulator Module |
| ARMSAT | Atmospheric Radiation Measurement Satellite |
| ARP | Address Resolution Protocols |
| ARP | Ancillary Radiometric Product |
| ARP | Application Related Product |
| ARPA | Advance Research Project Agency |
| ARPANET | Advanced Research Project Agency Net |
| ARS | Agricultural Research Service |
| ARS | Action Request System |
| ARTI | Advanced Range Technology Initiative |
| ARW | Angle Random Walk |
| AS | Advanced Solid |
| AS | Administration Stations |
| AS | Access Subgroup (Part of CEOS-WGISS) |
| AS&M | Analytical Services the Materials, Inc. |
| ASAR | Advanced Synthetic Aperture Radar (ESA) |
| ASAS | Advanced Solid-State Array Spectrometer |
| ASCA | Advanced Satellite for Cosmology and Astrophysics |
| ASCAT | Advanced Scatterometer |
| ASCII | American Standard Code for Information Interchange |
| ASCSS | Automatic Spacecraft Configuration Status System |
| ASCVR | As Shipped Configuration Verification Report |
| ASDC | Atmospheric Sciences Data Center (Langley Research Center) |
| ASDPS | ASTER Science Data Processing System |
| ASE | Airborne Support Equipment |
| ASET | Alliance System Engineering Team |
| ASF | Alaska SAR Facility (DAAC) |
| ASFUWG | ASF User Working Group |
| ASHE | Airborne Summer Hemisphere Experiment (NOAA) |
| ASHOE | Airborne Southern Hemisphere Ozone Experiment |
| ASI | Agenzia Spaziale Italiana (Italy) |
| ASI | Ampere-Second Integration |
| ASIC | Application Specific Integrated Circuit |
| ASLE | Adjusted Single Loss Expectancy |
| ASM | Acquisition Strategy Meeting |
| ASM | Attached Sync Marker |
| ASM | ASTER System Management |
| ASME | American Society of Mechanical Engineers |
| ASMO | Advanced Storage Magneto-Optical |
| ASN.1 | Abstract Syntax Notation One |
| ASP | Alaska SAR Processor |
| ASP | Active Server Pages |
| ASPRS | American Society for Photogrammetry and Remote Sensing |
| ASQC | American Society for Quality Control |
| ASRM | Advanced Solid Rocket Motor |
| ASSIST | ADPE System Sizing Tool |
| AST | Algorithm Support Team |
| AST | ASTER Science Team |
| ASTER | Advanced Spaceborne Thermal Emission and Reflection Radiometer (Formerly ITIR) |
| ASTEX | Atlantic Stratocumulus Transition Experiment |
| ASTGW | ASTER Gateway CSCI |
| ASTRO | Astronomy Platform (Shuttle) |
| AT | Acceptance Test |
| AT&T | American Telephone and Telegraph |
| AT/SV | Acceptance Test, System Verification |
| ATBD | Algorithm Theoretical Basis Document |
| ATC | Absolute Time Command |
| ATC | Active Thermal Control |
| ATC | Absolute Time Control |
| ATCAS | Advanced Technology Composite Aircraft Structures |
| ATCI | Agent Client Item |
| ATCS | Absolute Time Command Sequence |
| ATDRSS | Advanced Tracking and Data Relay Satellite System |
| ATE | Automatic Test Equipment |
| ATES | Alcatel Espace Systems |
| ATG | Aeropsace Test Group |
| ATIP | Advanced Technology Initiatives Program |
| ATL | Automated Tape Library |
| ATLAB | Atmospheric Laboratory |
| ATLANTA | Atlanta Land-Use Analysis: Temperature and Air-Quality |
| ATLAS | ATmospheric Laboratory for Applications and Science |
| ATLAS | Advanced Thermal and Land Applications Sensor |
| ATLID | Atmospheric Lidar |
| ATM | Asynchronous Transfer Mode |
| ATM | Atmospheric Trace Molecule Spectroscope |
| ATM | Airborne Terrain Mapping |
| ATM | Asynchronous Transmission Mode |
| ATMARP | Asynchronous Transfer Mode Address Resolution Protocol |
| ATMI | Application Transaction Management Interface |
| ATMOS | Atmospheric Observations Satellite |
| ATMOS | Atmospheric Trace Molecule Spectroscopy |
| ATMP | Acceptance Test Management Plan |
| ATMS | Advanced Technology Microwave Sounder |
| ATN | Advanced TIROS-N |
| ATO | Acceptance Test Organization |
| ATP | Acceptance Test Plan |
| ATP | Acceptance Test Procedure |
| ATP | Acceptance Test Package |
| ATP | Automatic Test Procedures |
| ATP | Approval To Process (Letter) |
| ATP | Authority To Proceed |
| ATR | Acceptance Test Review |
| ATR | Assistance Technical Representative |
| ATRR | Acceptance Test Readiness Review |
| ATS | Advanced Technology Satellite |
| ATS | Access To Space |
| ATSDR | Agency for Toxic Substances and Disease Registry |
| ATSR | Along Track Scanning Radiometer (ESA) |
| ATT | Acceptance Test Team |
| ATT | Automated Test Tool |
| ATT/PL | Attached Payload |
| AU | Audio Format (Developed for Sun Workstations) |
| AUI | Adapter User Interface |
| AURIO | Auroral Imaging Observatory |
| AVCS | Advanced Vidicon Camera System |
| AVHRR | Advanced Very High-Resolution Radiometer |
| AVHRR GAC | AVHRR Global Coverage Area |
| AVHRR LAC | AVHRR Local Area Coverage |
| AVIRIS | Airborne Visible and Infrared Imaging Spectrometer |
| AVIS | Airborne Vegetation Index Sensor |
| AVNIR | Advanced Visible and Near-Infrared Radiometer |
| AVR | Automatic Voice Recognition |
| AVS | Advanced Visualization System |
| AWCS | Agency-Wide Coding System |
| AWG | American Wire Gauge |
| AWIPS-90 | Advanced Weather Interactive Processing System for the 90's |
| AWN | Angle White Noise |
| AWOTS | Automated Wallops Orbital Tracking Station |
| AWS | Automatic Weather Stations |
| AWT | Abstract Windowing Toolkit (Java) |
| AXAF | Advanced X-Ray Astrophysics Facility |
| AZ/EL | Azimuthal / Elevation |
| B | Back to top |
| B-Dot | Rate of Change of Earth’s Magnetic Field |
| B-ISDN | Broadland Integrated Services Digital Network |
| B-R | Build and Release |
| B.0 - 1 | Release B.0 -1 |
| B/U | Backup |
| B0SOT | Release B.0 Search and Order Tool |
| BAAS | Billing/Accounting Application Service |
| BAH | Booz Allen Hamilton |
| BAHC | Biospherics Aspects of the Hydrologic Cycle (IGBP) |
| BALTEX | Baltic Sea Experiment |
| BAP | Baseline Activity Profile |
| BARC | Beltsville Agricultural Research Center |
| BASC | Board on Atmospheric Science and Climate (NRC) |
| BASIC | Bay Area Shared Information Consortium |
| BAT | Bench Acceptance Test |
| BATC | Ball Aerospace & Technologies Corp. |
| BATS | Biosphere-Atmosphere Transfer Model |
| BATSE | Burst And Transient Source Experiment |
| BB | Broadband |
| BB | Blackbody |
| BB | Bulletin Board |
| BBS | Bulletin Board Server |
| BBS | Bulletin Board Service |
| BBS | Bulletin Board System |
| BBU | Baseband Unit |
| BC | Bus Controller |
| BC | Bypass Check/Control Commands |
| BCC | Biogeochemical Models |
| BCC | Backup Satellite Control Center |
| BCH | Bose-Chaudhuri-Horquengham |
| BCH | Binary Coded Hexadecimal |
| BCN | Backbone Concentrator Node |
| BCU | Bus Control Unit |
| BDA | Bermuda, Ground Network Station, U.K. |
| BDDN | Broadcast Data Distribution Node |
| BDDS | Broadcast Data Distribution System |
| BDF | Bi-Directional Reflective Factor |
| BDS | Bi-Directional Scan Product (CERES) |
| BDU | Bus Data Unit |
| BED | Block Error Detection |
| BER | Bit Error Rate |
| BET | Best Estimated Trajectory |
| BFTP | Batch FTP |
|
| BGP | Boundary Gateway Protocol |
| BI | Battery-Imbalance fault |
| BIOME | Biogeochemical Information Ordering Management Environment |
| BIOS | Basic Input/Output System (Pc) |
| BIPS | Billion Instructions Per Second |
| BIT | Built In Test |
| BITNET | Because It’s Time Network |
| BIU | Bus Interface Unit |
| BLE | Ball Lead Engineer |
| BLM | Bureau of Land Management |
| BLOB | Binary Large Object |
| BLP | Ball Lead Planner |
| BMA | Battery Module Assembly |
| BMGT | Bulk Metadata Generation Tool |
| BNF | Backus-Nauer Format |
| BNSC | British National Space Centre (UK) |
| BOF | Beginning Of File |
| BOL | Beginning Of Life |
| BONeS | Block Oriented Network Simulator |
| BOP | Big Optical Pipe |
| BOREAS | Boreal Ecosystem-Atmospheric Study |
| BOT | Beginning Of Tape |
| BPDU | Bitstream Protocol Cata Unit |
| BPF | Band Pass Filter |
| BPR | Office of Biological and Physical Research |
| BPSK | Binary Phase Shift Key |
| BRDF | Bidirectional Reflective Distribution Function |
| BRDF | Bi-Reflectance Distribution Function |
| BRF | Bi-Directional Reflectance Factor |
| BSRN | Baseline Surface Radiation Network |
| BST | Ball Star Tracker |
| BTS | Brightness Temperature At Sensor |
| BTT | Bus Traffic Table |
| BTU | British Thermal Unit |
| BUFR | Binary Universal Format for Representation [of Data] |
| BUS | Broadcast and Unknown Server |
| BUV | Backscatter Ultraviolet |
| C | Back to top |
| C&D | Command and Data |
| C&DH | Command and Data Handling |
| C&DHS | Command and Data Handling Subsystem |
| C&DM | Configuration and Data Management |
| C&T | Command and Telemetry |
| C&TC | Command and Telemetry Controller |
| C&TH | Command and Telemetry Handbook |
| C-STAR | Conically Scanning Two-Look Airborne Radiometer |
| C/C | Command and Control |
| C/NO | Carrier power to NOise power aspectral density ratio |
|
| C/O | Checkout |
| C/O | Carry Out files |
| C/S | (EOS) Common Spacecraft |
| C1 | EDOS Release Configuration 1 Used for Terra (AM-1) Operations |
| C3 | Communications, Command and Control |
| CAD | Command Allocation Document |
| CAD | Computer Aided Design |
| CAD/CAE | Computer Aided Design/Computer Aided Engineering |
| CAD/CAM | Computer Aided Design/Computer Aided Manufacturing |
| CADH | Command And Data Handling |
| CADM | CERES Angular Directional Model |
| CADU | Channel Access Data Unit |
| CAGEX | CERES/ARM/GEWEX Experiment |
| CAI | Computer-Aided Instruction |
| CAL WG | Calibration Working Group |
| CAL/VAL | Calibration/Validation |
| CALIPSO | Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation |
| CALM | Circumpolar Active Layer Monitoring |
| CALS | Cloud and Aerosol Lidar System |
| CALS | Computer-aided Acquisition and Logistics Support |
| CAM | Computer-Aided Manufacturing |
| CAMEX | Convection And Moisture EXperiments |
| CAMS | Climate Analysis and Monitoring System |
| CaPE | Convective Precipitation and Electrification Experiment |
| CARIACO | Carbon Retention In A Colored Ocean |
| CARS | Climate Analysis and Research Service |
| CART | Cloud And Radiation Testbed |
| CASE | Computer Aided Software Engineering |
| CAVE | CERES Arm Validation Experiment |
| CBM | Command Block Memory |
| CBP | Code Block Processor |
| CBR | Constant Bit Rate |
| CBT | Computer Based Training |
| CC | Control Center |
| CC | Configuration Code |
| CC | Command Controller |
| CCA | Cloud Cover Assessment |
| CCAFS | Cape Canaveral Air Force Station |
| CCAR | Colorado Center for Astrodynamics Research (University of Colorado) |
| CCB | Configuration Change Board |
| CCB | Change Control Board |
| CCB | Configuration Control Board |
| CCD | Charge Coupled Device |
| CCDI | Clearcase DDTS Integration |
| CCDS | Communications and Data Distribution System |
| CCE | Charge Composition Explorer |
| CCI | Common Carrier Interface |
| CCL | Closed Circuit Line |
| CCM | Community Climate Model |
| CCN | Cloud Condensation Nuclei |
| CCOSM | Chemistry and Circulation Occultation Spectroscopy Mission |
| CCR | Configuration Change Request |
| CCR | Configuration Control Request |
| CCR | Computer Communications Room |
| CCRS | Canada Center for Remote Sensing |
| CCS | Climate Calibration Service |
| CCS | Communications and Control Segment (NCC) |
| CCS | Communications Subsystem |
| CCS | Constellation Coordination System |
| CCSD | Computer Compatible Signal Data |
| CCSDS | Consultative Committee for Space Data Systems |
| CCT | Computer-Compatible Tape |
| CDA | Command and Data Acquisition |
| CDA | Critical Design Audit |
| CDAS | Command and Data Acquisition Stations |
| CDAU | Channel Access Data Unit |
| CDB | Collection Data Base |
| CDB | Command Data Block |
| CDCR | Conceptual Design and Cost Review |
| CDDIS | Crustal Dynamics Data Information System |
| CDE | Common Desktop Environment |
| CDE | Common Data Environment |
| CDE | Cooler Drive Electronics |
| CDF | Common Data Format |
| CDF | Channel Definition Format (Microsoft’s Push Technology Based on XML) |
| CDFG | California Department of Fish and Game |
| CDH | Command and Data Handling |
| CDHF | Central Data Handling Facility |
| CDIAC | Carbon Dioxide Information and Analysis Center (DOE/ ORNL) |
| CDIS | Command and Data Interface Simulator Unit |
| CDM&CS | Climate Data Management and Calibration Services |
| CDMS | Climate Data Management Service |
| CDMS | Cryospheric Data Management System (NSIDC) |
| CDMTS | Configuration/Data Management Tracking System (ECS) |
| CDO | Central Documentation Office |
| CDOC | Colored Dissolved Organic Carbon |
| CDOM | Colored Dissolved Organic Matter |
| CDOS | Customer Data and Operations System |
| CDPs | Climate Data Products |
| CDR | Critical Design Review |
| CDRC | CIESIN Data and Research Center |
| CDRD | Contract Data Requirements Document |
| CDRL | Contract Data Requirements List |
| CDRL | Control Data Requirement List |
| CDROM | Compact Disc Read Only Memory |
| CDRs | Climate Data Records |
| CDS | Cell Directory Service |
| CDS | Comprehensive Discrepancy System |
| CDS | CCSDS Day Segmented Time Code |
| CDS | Consolidated Discrepancy reporting System |
| CDSA | Common Data Security Architecture |
| CDSCP | Cell Directory Service Command Program |
| CDSF | Customer Data Service Facility |
| CDT | Cell Delay Tolerance |
| CDT | Constraint Definer Tool |
| CDU | Customer Data Unit |
| CDU | Command Decoder Unit |
| CDV | Cell Delay Variation |
| CDW | Critical Design Walk-Through |
| CDWG | Client Design Working Group |
| CE | Conducted Emissions |
| CE | Clean Exposure |
| CE | Command Enable |
| CE | Critical Event |
| CEA | CERES Aft |
| CEAREX | Coordinated Eastern Arctic Experiment |
| CEC | Commission of European Committees |
| CECIL | C-Extended Command Interface Language |
| CED | Components Engineering Department |
| CED | Command Encryptor/Decryptor |
| CEES | Committee on Earth and Environmental Sciences |
| CEF | CERES Fore |
| CEG | Chief Engineering Group (Release B) |
| CEI | Contract End Item |
| CEIS | Contract End Item Specification |
| CEM | Cumulus Ensemble Model |
| CEMSCS | Central Environmental Monitoring Satellite Computer System (NOAA) |
| CEMSDS | Central Environmental Satellite Data System |
| CENR | Committee on the Environment and Natural Resources Research |
| CEO | Centre for Earth Observation (ESA) |
| CEO-ES | CEO - Enabling Services |
| CEOS | Committee on Earth Observations Satellites |
| CEOSR | Center for Earth Observing and Space Research |
| CEOSWGD/CS | CEOS Working Group on Data, Catalog Subgroup |
| CEQ | Council on Environmental Quality |
| CEQA | California Environmental Quality Act |
| CER | Cell Error Rate |
| CERCLA | Comprehensive Environmental Response Compensation Liability Act |
| CERES | Clouds and the Earth's Radiant Energy System |
| CERL | Construction Engineering Research Laboratory |
| CERN | European Laboratory for Particle Physics |
| CERT | Computer Emergency Response Team |
| CES | Committee on Earth Sciences |
| CES | Conical Earth Sensor |
| CES | Control Electronics Section |
| CESA | California Endangered Species Act |
| CESA | Conical-Scanning Earth Sensor Electronics |
| CESA | Conical Earth Sensor Assembly |
| CESAR | Cloud Electrification Studies Using Aircraft and Radar |
| CESBIO | Centre d’Études Spatiales De La Biosphère (France) |
| CESDIS | Center for Excellence in Space Data and Information Sciences (GSFC) |
| CESDS | Central Environmental Satellite Data System (NOAA) |
| CESE | Conical-Scanning Earth Sensor Electronics |
| CETF | Critical Evaluation Task Force |
| CEV | Command Execution Verification |
| CF | Customer Facility |
| CFC | Chloroflurocarbon |
| CFE | Customer Furnished Equipment |
| CFG CTRL | Configuration Control |
| CFIS | Conflict-Free Instrument Schedule |
| CFM | Cubic Feet Per Minute |
| CFPA | Cold Focal Plane Assembly |
| CFR | Code of Federal Regulations |
| CFS | Conflict Free Schedule |
| CG | Center of Gravity |
| CGC | Committee on Global Change (NRC) |
| CGCC | Current Ground Command Count |
| CGCP | Canadian Global Change Program |
| CGCR | Committee on Global Change Research |
| CGED | Committee on Geophysical and Environmental Data (NRC) |
| CGI | Common Gateway Interface |
| CGM | Computer Graphics Metafile |
| CGS | Commercial Ground Station |
| CH | Cable Harness |
| CHAMP | Challenging Mini-Satellite Payload |
| CHAMP | Comet Haley Active Monitoring System |
| CHAPS | Chemistry Annual Meeting for Project Support |
| CHAPS | Chem-1 Annual Planning and Steering |
| CHCI | Communications Hardware Configuration Item |
| CHEM | Chemistry Mission |
| CHGE | Center for Health and the Global Environment |
| CHI | Computer-Human Interface |
| CHID | Channel Identification |
| CHRP | Configurable High-Rate Processor |
| CHRPS | Configurable High-Rate System |
| CHUI | Character User Interface |
| CI | Configuration Item |
| CI | Command Interpreter |
| CIAL | Configuration Item Assembly List |
| CIC | Command Interrupt Code |
| CICP | Critical Item Control Plan |
| CICS | Customer Information Control System (IBM) |
| CIDL | Configuration Item Data List |
| CIDM | Client, Interoperability and Data Management |
| CIDR | Classless Interdomain Routing |
| CIESIN | Consortium for International Earth Science Information Network |
| CIF | Communications Interface Function |
| CIG | Customer Interface Group |
| CII | Chemistry International Instrument |
| CIIL | Configuration Item Identification List |
| CIIN | Configuration Item Identification Number |
| CIL | Common Interface Language |
| CIL | Critical Items List |
| CIM | Common Information Model |
| CIMSS | Cooperative Institute for Meteorological Satellite Studies |
| CIN | Center Information Network |
| CINTEX | Catalogue Interoperability Experiment |
| CINTEX | CEOS Catalogue Interoperability Experiment |
| CINTOPS | Catalogue Interoperability Operations |
| CIO | Contents Identifier Object |
| CIO | Chief Information Officer |
| CIP | Catalogue Interoperability Protocol |
| CIP-AD | CIP release A Demonstration |
| CIR | Committed Information Rate |
| CIRES | Cooperative Institute for Research in Environmental Sciences (University of Colorado) |
| CIRS | Composition Infrared Spectrometer |
| CIS | Cryogenic Interferometer Spectrometer |
| CIS | Configuration Item Specification |
| CISP | Commercial Internet Service Provider |
| CITE | Cargo Integration Test Equipment |
| CITE | Chemical Instruments Test Experiment |
| CITF | CDOS Integration and Test Facility |
| CIU | Controls Interface Unit |
| CIWG | Catalog Interoperability Working Group |
| CIWG | Canadian Ice Working Group |
| CKD | Clough, Kneizys, and Davies |
| CLAES | Cryogenic Limb Array Etalon Spectrometer |
| CLAM | Cooler Located Analog Electronics Module |
| CLAM | Chesapeake Lighthouse and Aircraft Measurements for Satellites |
| CLAS | Center for Lower Atmospheric Studies (University of Colorado) |
| CLASS | Communications Link Analysis Simulation System |
| CLASS | Comprehensive Large Array-data Stewardship System |
| CLAVR | Clouds from AVHRR |
| CLCW | Command Link Control Word |
| CLHP | Component Loop Heat Pipe |
| CLI | Command Line Interface |
| CLP | Cell Loss Priority |
| CLR | Cell Loss Ratio |
| CLS | Client Subsystem |
| CLTU | Command Link Transmission Unit |
| CLTU | Command Link Transfer Unit |
| CM | Configuration Management |
| CM | Command Management |
| CM | Center of Mass |
| CMAS | Configuration Management Application Service |
| CMB | Configuration Management Board |
|
| CMD | Command Subsystem |
| CMD/TLM | Command/Telemetry |
| CMDL | Climate Monitoring and Diagnostics Laboratory |
| CME | Calibration Mechanism |
| CMI | Cryptographic Management Interface |
| CMI | Configuration Management Instruction |
| CMIP | Common Management Information Protocol |
| CMIS | Common Management Information Services |
| CMM | Configuration Management Manual |
| CMO | Configuration Management Office |
| CMOS | Common Metal Oxide Semiconductor |
| CMP | Configuration Management Plan |
| CMP | Computer Model Package |
| CMP | Corrective Maintenance Performed |
| CMR | Cell Mis-Insertion Rate |
| CMS | Climate Mission Storage |
| CMS | Command Management System |
| CMS | Common Management Service |
| CMS | Command Management Service |
| CMS | Customer Management System |
| CMS | Code Management System |
| CMS | Configuration Management System |
| CMS | Command Management Subsystem |
| CMSE | Configuration Management Systems Engineer |
| CMSL | Configuration Management Software Librarian |
| CMT | Collection Management Tools |
| CMTS | Control and Monitor Test Set |
| CMU | Contamination Monitoring Unit |
| CMU | Cooler Mechanical Unit |
| CN | Change Notice |
| CNE | Campus Network Environment |
| CNE | Center Network Environment |
| CNELs | Community Noise Equivalent Levels |
| CNES | Centre National d'Etudes Spatiales (France) |
| CNPS | California Native Plant Society |
| CNR | Consiglio Nazionale Delle Ricerche (Italy) |
| CNR | Carrier to Noise Ratio |
| CNRS | Centre National De La Recherche Scientifique (France) |
| CO | Contracting Officer |
| CO | Carbon Monoxide |
|
| Co-I | Co-Investigator |
| CO1 | Change Order 1 |
| COADS | Comprehensive Ocean-Atmosphere Data Set |
| COARDS | Cooperative Ocean/Atmosphere Research Data Service |
| COARE | [Toga] Coupled Ocean-Atmosphere Response Experiment |
| COBE | Cosmic Background Explorer |
|
| CODA | Customer Operational Data Accounting Service |
| CODD | Change Order Definition Date |
| CODEC | Compression/Decompression |
| CODMAC | Committee On Data Management And Computation |
| COE | Contingency Operations Exercise |
| COE | Contingency Exercise |
| COF | Construction Of Facilities |
| COF | Component Origination Form |
| COFUR | Cost Of Filling a User Request |
| COHMEX | Cooperative Huntsville Meteorological Experiment |
| COLA | Center for Ocean-Land-Atmosphere (IGES) |
| COLD | Computer Output to Laser Disk |
| COLOR | Ocean Color Flight - SeaWIFS |
| COM | Common Object Model (Language-Independent Architecture from Microsoft) |
| COM | Contamination Monitor (TEDA) |
| COM-S | Contamination Monitor Sensor (TEDA) |
| CoMITS | Configuration Management Information Tracking System |
| COMM | Communication Subsystem |
| COMMGR | Communications Manager |
| COMMS | Communication Subsystem (Generic Interface) |
| COMS | Communications Subsystem |
| COMS | CDOS Operations Management Service |
| COMSEC | Communications Security |
|
| CONS | Connection Oriented Network Service |
|
| CONUS | Continental United States |
| COOP | Continuity Of Operations Plan |
| COP | Command Operation Procedure |
| COP | Co-Orbiting Platform |
| COP | Calibrated Output Processing |
| COP-1 | Command Operations Protocol-1 |
| CORBA | Common Object Request Broker Architecture |
| COS | Class Of Service |
| COS | Cosmic Origins Spectrograph (HST) |
| COS | Carbonyl Sulfide |
| COS | Constellation Operations System |
| COSE | Common Operating System Environment |
| COSEPUP | Committee On Science, Engineering, and Public Policy |
| COSMIC | Computer Software Management and Information Center (NASA) |
| COSPAR | Congress for Space Research |
| COSS | Common Object Services Specifications |
| COSTR | Collaborative Solar Terrestrial Research |
| COT | Customer Operations Team |
| COTR | Contracting Officer’s Technical Representative |
| COTS | Commercial Off-The Shelf |
| COV | Coefficient Of Variation |
| COVE | CERES Ocean Validation Experiment |
| CP | Cold Plate |
| CP | Conference Publication |
| CP | Command Processor |
| CP | Telemetry and Control Processor |
| CP | Call for Proposals |
| CP | Cost Plus |
| CP-PDU | Ccsds Path Protocol Data Unit |
| CP-PDU | Central Processing-Protocol Data Unit |
| CPAF | Cost Plus Award Fee |
| CPAN | Comprehensive Perl Archive Network |
| CPC | Computer Program Components |
| CPCGN | Canadian Permanent Committee on Geographical Names |
| CPCI | Computer Program Configuration Item |
| CPEP | Climate, People and Environment Program |
| CPF | Calibration Parameters File |
| CPFF | Cost Plus Fixed Fee |
| CPG | Consumer Packaged Goods |
| CPHTS | Capillary-Pumped Heat Transport System |
| CPI | Cost Performance Index |
| CPL | Computer Program Library |
| CPM | Critical Path Method |
| CPN | CCSDS Principal Network |
| CPP | Cloud Photopolarimeter |
| CPR | Cost Performance Report |
| CPR | Cloud Profiling Radar |
| CPS | Contractor Purchasing System |
| CPSR | Contractor Purchasing System Review |
| CPT | Comprehensive Performance Test |
| CPTEC | Center for Weather and Climate Prediction (Brazil) |
| CPU | Central Processing Unit |
| CPV | Continuous Pressure Vessel |
| CR | Change Report |
| CR | Contractor Report |
| CR | Correlation Radiometer |
| CR | Correlation Radiometry |
| CR | Classroom Presentation |
| CR | Cost Reimbursable |
| CR | Change Request |
| CRA | Central Radiator Assembly |
| CRC | Cyclic Redundancy Code |
| CRC | Climate Research Committee (NRC) |
| CRC | Cyclic Redundancy Checksum |
| CRF | Change Report Form |
| CrIMSS | Cross-track Infrared and Advanced Technology Microwave Sounders |
| CrIS | Cross-track Infrared Sounder |
| CRISTA | Cryogenic Infrared Spectrometers and Telescopes for the Atmosphere |
| CRISTA/SPAS | Cryogenic Infrared Spectrometers and Telescopes for the Atmosphere/ Shuttle Pallet Satellite |
| CRL | Communication Research Lab (Japan) |
| CRM | Change Request Manager |
| CRM | Computer Resource Manager |
| CRP | Command Relay Processor |
| CRP | Configuration Requirements Processing |
| CRP | Command Return Processor (ERPS component) |
| CRR | Capabilities and Requirements Review |
| CRS | Cloud Radiative Swath |
| CRSP | Commercial Remote Sensing Program |
| CRT | Cathode Ray Tube |
| CRU | Computer Resource Unit |
| CRYSYS | Cryospheric System (Monitors Global Change in Canada (EOS IDS) |
| CS | Client Server (Use Client-Server for EDHS Search) |
| CS | Communications Subsystem |
| CS | Common Services |
| CS | Computer Software |
| CS | Convergence Sublayer |
| CS | Common Spacecraft |
| CSA | Canadian Space Agency |
| CSA | Configuration Status Accounting |
| CSA | Cellestal Sensor Assembly |
| CSAFS | Central Standard Autonomous File System |
| CSAR | Configuration Status Accounting Report |
| CSAT | Center for Space and Advanced Technology |
| CSAT | Computer Security Awareness Training |
| CSC | Computer Software Component |
| CSC | Coordinate System Conversion |
| CSC | Computer Sciences Corporation |
| CSCI | Computer Software Configuration Item |
| CSD | Command Safety Destruct |
| CSDT | Computer Science Data Types |
| CSES | Center for the Study of Earth from Space (University of Colorado) |
| CSF | Comprehensive Science Forms |
| CSF | Control and Simulation Facility |
| CSF | Chemistry and Special Flights |
| CSI | Configuration Sub Item |
| CSI | Contractor Source Inspector |
| CSI | (Institute for) Computational Sciences and Informatics |
| CSIRO | Commonwealth Scientific and Industrial Research Organization (Australia) |
| CSL | Configuration Status List |
| CSLC | California Space Launch Complex |
| CSM | Computer Status Monitor |
| CSM | Command Storage Memory |
| CSM | Cold Sky Mirror (AMSR-E) |
| CSMA/CD | Carrier-Sense Multiple-Access With Collision Detection |
| CSMS | Communications and Systems Management Segment |
| CSO | Computer Security Officer |
| CSOC | Consolidated Space Operations Center |
| CSOC | Combined Satellite Operations Contract |
| CSOC | Consolidated Space Operations Contract |
| CSP | Common Signal Processor |
| CSP | Commerce Service Provider |
| CSR | Consent to Ship Review |
| CSR | Center for Space Research (University of Texas) |
| CSR | Customer Service Request |
| CSS | Communications Subsystem |
| CSS | Client Server Subsystem |
| CSS | Coarse Sun Sensor |
| CSS | Cascading Style Sheets (W3C, HTML 4.0) |
| CSS | Communications and Infrastructure Subsystem |
| CSS-P | CSS Positioning |
| CSS1 | CSS Level 1 (W3C) |
| CSS2 | CSS Level 2 (W3C) |
| CSSA | Coarse Sun Sensor Assembly |
| CSSE | Cdos Software Support Environment |
| CSSR | Contract Summary Status Report |
| CSSR | Contract Schedule Status Report |
| CST | Carrier Star Tracker |
| CST | Comment/Survey Tool |
| CSTI | Civilian Space Technology Initiative |
| CSTOL | Customer System Test and Operations Language |
| CSTOL | Colorado System Test Operations Language |
| CSU | Computer Software Unit |
| CSU | Command Language (OASIS) |
| CSWP | Common Software Process |
| CT | Combined Test |
| CT | Clear Text |
| CTA | Computer Technology Assessment |
| CTAV | CDOS Test And Verification |
| CTB | Central Thermal Bus |
| CTBA | Command and Telemetry Buffer Assembly |
| CTC | Contract Target Cost |
| CTC | Cost To Complete |
| CTC | Command and Telemetry Controller |
| CTC | Command & Telemetry Controller/Communication and Tracking Console |
| CTC | Center for Technology Commercialization |
| CTCU | Central Telemetry Control Unit |
| CTD | Cost To Date |
| CTD | Cell Transfer Delay |
| CTE | Coefficient of Thermal Expansion |
| CTF | Critical Transfer Frames |
| CTFS | Common Time Frequency System |
| CTI | Command and Telemetry Interface |
| CTI | Computer Telephony Integration |
| CTIB | Command and Telemetry Interface Board |
| CTIU | Command and Telemetry Interface Unit |
| CTL | Compatibility Test Laboratory |
| CtLib | Call to Library |
| CTM | Communications Test Message |
| CTM | Chemistry and Transport Model |
| CTN | Collection Technical Note |
| CTO | Commercial Technology Office |
| CTP | Confidence Test Program |
| CTP | Confidence Test Package |
| CTP-EFC | Confidence Test Program Electronic File Cabinet |
| CTQ | Command Tag Queuing |
| CTU | Command and Telemetry Unit |
| CTV | Compatibility Test Van |
| CTV | Cell Transfer Variation |
| CU | Control Unit |
| CUB | Cuiba, Brazil Station ID |
| CUC | Constant and Unit Conversions |
| CUC | CCSDS Unsegmented Time Code |
| CUP | Contract Understanding Period |
| CUT | Code and Unit Test |
| CUT | COTS Upgrade Team |
| CVCDU | Coded Virtual Channel Data Unit |
|
| CVCM | Collected Volatile Condensable Mass |
| CVP | Content Vectoring Protocol |
| CVS | Concurrent Version System |
| CVT | Current Value Table |
| CW | Continuous Wave |
| CW | Control Window |
| CW | Carrier Wave |
| CWBS | Contract Work Breakdown Structure |
| CY | Calendar Year |
| CZCS | Nimbus-7 Coastal Zone Color Scanner |
| D | Back to top |
| D&F | Determination and Finding |
| D&P | Definitive and Predictive |
| D/L | Downlink |
| D3 | High Performance Tape Cartridge System Used in DSS STMGT |
| DAA | Data Availability Acknowledgment |
| DAA | Document Availability Authorization |
| DAAC | Distributed Active Archive Center |
| DADS | Data Archive and Distribution System |
| DAF | Data Archive Facility |
| DAF | Data Archival Function |
| DAF | Data Archive Facility (EDOS Component) |
| DAMUS | Data Management and User Services |
| DAN | Data Availability Notice |
| DAO | Data Assimilation Office |
| DAP | Directory Access Protocol |
| DAP | Delivered Algorithm Package |
| DAR | Data Acquisition Request |
| DART | Data Acquisition Request Tool |
| DAS | Data Assimilation System (At DAO) |
| DAS | Detailed Activity Schedule |
| DAS | Direct Access Service |
| DAS | Direct Access System |
| DAS | Data Availability Schedule |
| DAS | Data Assimilation System |
| DAS | Detail Activity Schedule |
| DASCE | Data Assimilation System Computing Environment |
| DASD | Direct Access Storage Device |
| DAT | Digital Audio Tape |
| DB | Database |
| DB | Data Block |
| DB | Direct Broadcast (Terra AM-1) |
| DBA | Database Administrator |
| DBCS | Double-Byte Character Set |
| DBE | Data Block Emulator |
| DBMS | Database Management System |
| DBS | Direct Broadcast System |
| DBS | Database |
| DCE | Distributed Computing Environment (OSF) |
| DCE | Data Communications Equipment |
| DCE | Distributed Communication Environment |
| DCF | Data Capture Facility |
| DCHCI | Distributed Communications Hardware Configuration Item |
| DCI | Data Communications Interface |
| DCL | Data Control Language |
| DCN | Document Change Notice |
| DCOM | Distributed Component Object Model |
| DCPS | Deployment Cable Position Switch |
| DCR | Database Change Request |
| DCW | Digital Chart of the World |
| DD | Direct Downlink |
| DD | Data Dictionary |
| DDA | Deployment Drive Assembly |
| DDF | Data Distribution Facility (PACOR) |
| DDI | Diffuse Downwelling Irradiance |
| DDICT | Data Dictionary |
|
| DDIST | Data Distribution |
| DDL | Data Definition Language |
| DDL | Data Description Language |
| DDL | Direct Downlink (Terra AM-1) |
| DDM | Deployment Drive Motor |
| DDMT | Data Dictionary Maintenance Tool |
| DDN | Data Delivery Notice |
| DDR | Data Delivery Report |
| DDR | Detailed Design Review |
| DDS | Direct Downlink System |
| DDSHW | Document Data Server HWCI |
| DDSIT | Data Distribution Service CSCI |
|
| DDSRV | Document Data Server |
| DDT | Data Dictionary Tool |
| DDW | Detailed Design Walkthrough |
| DE | Dynamics Explorer |
| DEBITS | Deposition of Biogeochemically Important Trace Species |
| DECOM | [FOS] Decommutation Process |
| DEDS | DAAC to EDOS Data Set |
| DEF | Data Exchange Format |
| DEL | Data Evaluation Laboratory (GSFC) |
| DEM | Digital Elevation Model |
| DEM | Digital Elevation Map |
| DES | Deployable Earth Shade (AIRS) |
| DES | Data Encryption Standard |
| DESKT | Desktop [Configuration Item] |
| DF | Data Flow |
| DFA | Dual Frequency Altimeter |
| DFA | Dual-Frequency Radar Altimeter |
| DFCB | Data Format Control Book |
| DFCD | Data Format Control Document |
| DFD | Data Flow Diagram |
| DFMH | Dispersed Free Molecular Heating |
| DG1 | Data Group 1 (TDRSS) |
| DG2 | Data Group 2 (TDRSS) |
| DGVM | Dynamic Global Vegetation Models |
| DHC | Data Handling Center |
| DHCP | Dynamic Host Configuration Protocol |
| DHF | Data Handling Facility |
| DIAL | Differential Absorption Lidar |
| DID | Data Item Description |
| DIF | Data Interface Facility |
| DIF | Directory Interchange Format |
| DIM | Distributed Information Manager |
| DIMGR | Distributed Information Manager CSCI |
| DIP | Delivered IP |
| DIPHW | Distribution and Ingest Peripheral Management HWCI |
| DIS | Data Information System |
| DITL | Day-In-The-Life |
| DLG | Digital Line Graph |
| DLL | Dynamic Link Library |
| DLPO | DoD Landsat Program Office |
| DLS | Dynamic Limb Sounder |
| DLT | Digital Linear Tape |
| DM | Data Management |
| DMF | Decommutated Mnemonics File |
| DMGHW | Data Management Hardware [Configuration Item] |
| DML | Data Manipulation Language |
| DMO | Data Management Office |
| DMR | Detailed Mission Requirements |
| DMS | Data Management System |
| DMSP | Defense Meteorological Satellite Program |
| DMWG | Data Migration Working Group |
| DN | Delivery Notice |
| DNS | Domain Name Services |
| DNSI | Direct Normal Solar Irradiance |
| DOAS | Differential Optical Absorption Spectroscopy |
| DOD | Digital Optical Data |
| DOD | Digital Optical Disk |
| DoD | Department of Defense |
| DOF | Distributed Object Framework |
| DOF | Degrees Of Freedom |
| DOF | Data Operations Facility |
| DOPLID | Doppler Lidar |
| DORIS | Doppler Orbitography and Radiopositioning Integrated By Satellite |
| DORRAN | Distributed Ordering, Reporting, Researching, and Accounting Network (EDC) |
| DOS | Disk Operating System |
| DOTL | Day-of-the-Launch |
| DOY | Day Of Year |
| DP | Direct Playback (Terra AM-1) |
| DPAF | Dual Payload Attach Fitting |
| DPF | Data Processing Facility |
| DPM | Deputy Project Manager |
| DPM/R | Deputy Project Manager, Resources |
| DPM/R | Deputy Project Manager/Resources |
| DPR | Dual Precipitation Radar |
| DPR | Data Processing Request |
|
| DPREP | Data Pre-Processing |
| DPRID | Data Processing Request Identifier |
| DPS | Data Processing Subsystem |
| DPS | Data Product Specification |
| DR | Discrepancies Report |
| DR | Data Request |
| DR | Data Rate |
| DR | Delivery Record |
| DR | Discrepancy Report |
| DR | Data Requirement |
| DRB | Discrepancy Review Boards |
| DRD | Data Requirements Document |
| DRP | Data Reduction Platform |
| DRPHW | Data Repository Hardware [Configuration Item] |
| DRS | Direct Downlink Receiving Station |
| DRTS | Data Relay and Tracking System (Japan) |
| DRTT | Discrepancy Reporting the Tracking Tool |
| DS | Data Server |
| DSA | Data Subscription Acknowledgment |
| DSA | Directory Service Agent |
| DSCC | Deep Space Communications Complex (DSN) |
| DSI | Data Server Interface |
| DSMC | Data Services Management Center |
| DSN | Deep Space Network |
| DSNO | Distributed Network Systems Office |
| DSP | Directory Service Protocol |
| DSR | Data Subscription Request |
| DSS | Data Server Subsystem |
| DSS | Data Subsystem |
| DSS | Dynamic Spacecraft Simulator |
| DSU | Data Storage Unit |
| DSWG | Data Science Working Group |
| DTED | Digital Terrain Evaluation Data |
| DTG | Date Time Group |
| DTM | Digital Terrain Model |
| DTM | Dual Thruster Module |
| DTO | Detailed Test Objective |
| DTS | Digital Test Subsystem |
| DTU | Digital Telemetry Unit |
| DUE | DAAC Unique Extension |
| DV | Data Visualization |
| DV | Delta Velocity |
| DVD | Digital Video Disk |
| DWL | Doppler Wind Lidar |
| DWS | Doppler Wind Sensor |
| E | Back to top |
| E&S | Earth and Sky |
| E-ISAT | EOSDIS Internet Security Assessment Team |
| E-LIDAR | Experimental Lidar |
| E-R | Entity-Relationship |
| EA | Electronics Assembly |
| EAGE | Electrical Aerospace Ground Equipment |
| EAI | Enterprise Application Integration |
| EAP | EOS Advisory Panel |
| EAP | EDOS Activity Plan |
| EAR | Export Administration Regulations |
| Early AM-1 | EOS Morning Crossing (Descending) Mission |
| EAS | Electrical Accommodation Subsystem (Terra AM-1) |
| EAS | ECS Advertising Service |
| EASE | Equal Area SSM/I Earth |
| EASE | Equal-Area Scalable Earth |
| EASE | Equal-Area Scalable Earth-Grid |
| EASE-Grid | Equal Area SSM/I Earth Grid |
| EASOE | European Arctic Stratospheric Ozone Experiment |
| EBC | Eastern Boundary Currents |
| EBCDIC | Extended Binary-Coded Decimal Interchange Code |
| EBnet | EOSDIS Backbone Network Combines ECOM and ESN) |
| EBnet | Ethernet Backbone Network |
| EBnet | EOSDIS Backbone network |
| EBS | EOS Broadcast Stations |
| EC | Error Correction |
| ECC | Earthdata Code Collaborative |
| ECC | Error Correction Code |
| ECC | Elliptic Curve Cryptography |
| ECD | Expected Completion Date |
| ECE | Earthdata Collaborative Environment |
| ECEF | Earth Centered Earth Fixed |
| ECHIVAL | European International Project on Climate and Hydrological Interactions Between Vegetation, Atmosphere, and Land Surfaces |
| ECHO | EOS Clearing House |
| ECI | Earth Centered Inertial |
| ECL | EOS Control Language |
| ECL | ECS Command Language |
| ECL | Emitter Coupled Logic |
| ECLIPS | Experimental Cloud Lidar Pilot Study |
| ECMA | European Computer Manufacturers Association |
| ECMAScript | Scripting Specifications By W3C |
| ECMP | ECS Configuration Management Plan |
| ECMWF | European Centre for Medium Range Weather Forecasts (UK) |
| ECN | Engineering Change Notice |
| ECOM | EOS Communications (Replaced By Ebnet) |
| ECOM | EOSDIS Communications System |
| ECR | Earth Centered Rotating |
| ECRB | EOS Configuration Review Board |
| ECRB | EMOS Configuration Review Board |
| ECRS | ESDIS Consolidated Requirements System |
| ECS | EOSDIS Core System |
| ECSO | Executive Committee for Science Outreach |
| ECSS | EOS Common Spacecraft Specification |
| ECSTVP | ECS Test and Verification Procedures |
| ECSVDB | ECS Verification Database |
| ECT | EOS Compatibility Test |
| EDAC | Error Detection And Correction |
| EDC | Earth Resources Observation and Science (EROS) Center (USGS) |
| EDF | ECS Development Facility |
| EDF | Engineering Data Formatter |
| EDG | EOS Data Gateway (V0 Client – Replacement of B0SOT) |
| EDGRS | Earth Data Gathering and Reporting System |
| EDHS | ECS Data Handling System |
| EDI | Electronic Data Interface |
| EDI | Electronic Data Interchange |
|
| EDIO | External Development and Interface Office |
| EDMA | ESDIS Data Model Analysis |
| EDMP | ECS Data Management Plan |
| EDN | Expedited Data Set Notification |
| EDOCS | EOS Data Operations and Communications System |
| EDOS | EOS Data and Operations System |
| EDP | Embedded Data Processor |
| EDR | Expedited Data Set Request |
| EDRI | Engineering Data Ready Indicator |
| EDR | Environmental Data Record |
| EDRS | European Data Relay Satellite |
| EDS | Earth Data System (NIIT) |
| EDS | Expedited Data Set |
| EDS | EDOS Data Set |
| EDTS | End-to-end Data Tracking System |
| EDU | EDOS Data Unit |
| EEA | European Environment Agency |
| EECF | Earthnet ERS-1 Central Facility |
| EEDSOG | End-to-End Data Systems Operations Group |
| EEID | EOSDIS External Interface Document |
| EEMOC | European EOS Mission Operations Center |
| EEPROM | Electrically Erasable Programmable Readable Only Memory |
| EET | End-to-End Test |
| EETS | EOS Electronic Transfer System |
| EFC | Electronic File Cabinet |
| EFEDA | ECHIVAL Field Experiment in Desertification-Threatened Areas |
| EFM | EOS (Terra AM-1) Flight software Maintenance |
| EGCM | Eddy-Resolving General Circulation Model |
| EGIG | Expédition Glaciologique International Au Groenland |
| EGP | Exterior Gateway Protocol |
| EGS | EOS Ground System |
| EGS | EOS Ground Station |
| EGSE | Electrical Ground Support Equipment |
| EGT | EOSDIS Ground Terminal |
| EGTS | EOS Ground Test System |
| EICC | European Instrument Control Center |
| EIDE | Enhanced IDE |
| EIF | Entry Interface Facility |
| EIGRP | Enhanced Interior Gateway Routing Protocol |
| EIN | Equipment Identification Number |
| EIN | ECS Identification Number |
| EIP | Experiment Implementation Plan |
| EIRP | Equivalent Isotropically Radiated Power |
| EIRP | Effective Isotropic Radiated Power |
| EIRR | External Independent Readiness Review |
| EISA | Extended Industry Standard Architecture |
| EISA | Enhanced Industry Standard Architecture |
| EIT | EOSDIS Integration Team |
| EITC | EGS Interface Test Capability |
| EITP | Earth Science Information Technology Program |
| EITSO | ESDIS Information Technology Security Official |
| EJB | Enterprise Javabean (Server Component Model for Java from Sun) |
| ELA | Event Logging API |
| ELAN | Emulated Local Area Network |
| ELANOR | Earth Limb And Nadir Operational Retrieval |
| ELAS | Earth (Resources) Lab Applications Software |
| ELF | Extremely Low Frequency |
| ELS | Emergency Load Shed |
| ELU | Electronics Unit |
| ELV | Expendable Launch Vehicle |
| EM | Engineering Model |
| EM | Equipment Module |
| EMA | Enterprise Management Architecture |
| EMACC | EOS Multiple Applications Control Center |
| EMAP | Environmental Monitoring and Assessment Program |
| EMASS | E-Systems Modular Automated Storage Systems |
| EMC | Electromagnetic Compatibility |
| EMC | Electromagnetic Charge |
| EMC | Emergency Mode Controller |
| EMD | EOSDIS Core System Maintenance and Development |
| EME | ECS Maintenance Environment |
| EMF | Events Message File |
| EMI | Electromagnetic Interference |
| EMI | Electromagnetic-Radiation Interference |
| EMIS | EDOS Management Information System |
| EMISM | Electromagnetic Interference Safety Margin |
| EMLS | EOS Microwave Limb Sounder |
| EMOC | EOSDIS Mission Operations Center |
| EMOS | EOS Mission Operations System |
| EMOWG | EOS Mission Operations Working Group |
| EMS | ESDIS Metrics System |
| EMSn | EOS Mission Support Network |
| EMU | Engineering Model Unit |
| ENACEOS | Energetic Neutral Atom Camera for EOS |
| ENCC | Emergency NCC |
| ENSO | El Niño/Southern Oscillation |
| ENVISAT | Environmental Satellite |
| ENVISAT-1 | First POEM Mission (ESA) |
| EO | Earth Observation |
| EO-ICWG | Earth Observations International Coordination Working Group |
| EOC | EOS Operations Center |
| EOC | Early Orbit Checkout |
| EOC | End Of Contract |
| EOC | Earth Observation Center (Japan) |
| EOC | Essential Over-Current |
| EOCAP | Earth Observation Commercial Applications Program |
| EOCC | EOS Operations and Control Center |
| EOD | Entering Orbital Day |
| EODC | Earth Observation Data Centre (UK) |
| EOF | End Of File |
| EOIS | Earth Observation Information System |
| EOL | End Of Life |
| EOL | End Of Line |
| EON | Entering Orbital Night |
| EOP | EDOS Operation Protocol |
| EOPM | Electro-Optic Phase Modulator |
| EOPP | Earth Observation Preparatory Programme |
| EOPS | ERBE Operational Processing System (LaRC) |
| EOR | Engineering Operations Room |
| EORC | Earth Observation Research Center (Tokyo, Japan) |
| EOS | Earth Observing System |
| EOS | Earth Observing Satellite |
| EOS AERO | EOS Aerosol Mission |
| EOS ALT | EOS Altimetry Mission |
| EOS AM | Earth Observing System observatory AM Or morning crossing (Terra satellite) |
| EOS CHEM | EOS Chemistry Mission |
| EOS COLOR | EOS Color Mission |
| EOS PM | Earth Observing System observatory PM or afternoon crossing (Aqua satellite) |
| EOS-G | Earth Observing System - Goddard |
| EOSAT | Earth Observing Satellite Company |
| EOSC | EOS Operations Support Capability |
| EOSDIS | EOS Data and Information System |
| EOSFDS | EOS Flight Data System |
| EOSIWG | EOS Investigator Working Group |
| EOSP | Earth Observing Scanning Polarimeter |
| EOSPSO | EOS Project Science Office |
| EOSSALT | Earth Observing Solid-State Radar Altimeter |
| EOSSMS | EOS Space Measurement System |
| EOSSRP | EOS Scientific Research Program |
| EOT | End Of Track |
| EOT | Engineering Operations Team |
| EOT | EDOS Operational Timeline |
| EOWG | ESDIS Operations Working Group |
| EP | Evaluation Package |
| EP | Explorer Platform |
| EP | Earth Probe |
| EP CSR | Evaluation Package Consent to Ship Review |
| EPA | Environmental Protection Agency |
| EPDS | EMOS Production Data Set |
| EPDS | Earth Probe Data System |
| EPDS | Electrical Power Distribution Subsystem |
| EPG | ECS Process Improvement Group |
| EPG | Engineering Process Group |
| EPGN | EOS Polar Ground Network |
| EPGS | EOS Polar Ground Station |
| EPGSS | Earth Observing Polar Ground Station Services |
| EPH | Ephemeris Data Access |
| EPIC | Energetic Particles and Ion Composition |
| EPIC | Earth Polychromatic Imaging Camera |
| EPM | Earth Pointing Mode |
| EPM | Earth Point Mode |
| EPO | Education and Public Outreach |
| EPO | Emergency Power Off |
| EPOP | European Polar-Orbiting Platform |
| EPRR | Evaluation Package Readiness Review |
| EPS | Encapsulated Postscript |
| EPS | Electrical Power System |
| EPS | Electrical Power Subsystem (Terra AM-1) |
| EPV | Endpoint Vector |
| ER-2 | Earth Resources NASA research aircraft |
| ERAST | Experimental Research Aircraft Sensor Technology Program |
| ERB | Earth Radiation Budget |
| ERB | EGS Review Board |
| ERBE | Earth Radiation Budget Experiment |
| ERBI | Earth Radiation Budget Instrument |
| ERBS | Earth Radiation Budget Satellite |
| ERCN | Educator Resource Center Network |
| ERD | Entity Relationship Diagram |
| ERDET | ESDIS Requirements Database Engineering Team |
| ERG | EOSDIS Review Group |
| ERIM | Environmental Research Institute of Michigan |
| ERIS | Emos Requirements Information System |
| ERL | Environmental Research Laboratory |
| ERMES | European Radio Messaging System |
| ERO | Exact Repeat Orbit |
| EROS | Earth Resources Observation System |
| ERPS | EOS Real-Time Processing System |
|
| ERS-1 and 2 | European Remote Sensing Satellite-1 and 2 |
| ERSDAC | Earth Remote Sensing Data Analysis Center (Japan) |
| ERTS-1 | Earth Resources Technology Satellite –1 |
| ESA | European Space Agency |
| ESA | Earth Sensor Assembly |
| ESAD | Earth Science and Applications Data System |
| ESB | Essential Bus |
| ESCC | Electrically Self-Calibrating Cavity |
| ESCIF | Electrical Spacecraft Interface |
| ESCP | Emulated Spacecraft Control Processor |
| ESDD | Earth Science Data Directory |
| ESDIS | Earth Science Data and Information System |
| ESDISP | ESDIS Project |
| ESDT | Earth Science Data Type |
| ESE | Earth Sciences Enterprise |
| ESE | Earth Science Enterprise (Formerly Mission To Planet Earth) |
| ESFU | Enhanced Standard Format Unit |
| ESH | EDU Service Header |
| ESH | EDOS Service Header |
| ESIC | Earth Science Information Center |
| ESID | EOSDIS Systems Interface Document |
| ESIOP | Environment-Specific Inter-ORB Protocol |
| ESIP | Earth Science Information Partner |
| ESIPS | EOSDIS Science Investigator-Led Processing System |
| ESIS | ESA Space Information Systems |
| ESJWG | Earth Science Joint Working Group |
| ESMC | Eastern Space and Missile Center |
| ESMES | EOS System Management and Engineering Site |
| ESMO | Earth Science Mission Operations |
| ESMOS | Earth Science Mission Operation System |
| ESMP | ECS Schedule Management Plan |
| ESMR | Electronically Scanning Microwave Radiometer |
| ESN | EOSDIS Science Network (ECS) (Replaced By Ebnet) |
| ESnet | Energy Sciences Network |
| ESO | ECS Server Object |
| ESOC | European Space Operations Center |
| ESOC | Equivalent State Of Charge |
| ESOC | EOSDIS System and Operations Concept (Document) |
| ESOD | Earth Science On-Line Directory |
| ESOO | ESDIS Science Operations Office |
| ESPAD | Expert System for Platform Anomaly Diagnosis |
| ESQL | Earth Science Query Language |
| ESR | EGS Status Review |
| ESR | Electrical Substitution Radiometer |
| ESRI | Environmental Systems Research Institute |
| ESRIN | European Space Research Institute |
| ESSAAC | Earth System Science and Applications Advisory Committee |
| ESSB | Earth System Sciences Building |
| ESSC | European Space Science Committee |
| ESSC | Earth Systems Science Committee |
| ESSE | EDOS System Support Environment |
| ESSIC | Earth System Science Interdisciplinary Center |
| ESSn | Earth Science Space Network |
| ESSn | EOS Science Support Network |
| ESSn | EOSDIS Science Support Network |
| ESSO | Earth Science Support Office |
| ESSP | Earth System Science Pathfinder |
| ESSP | Earth Science Systems Program |
| ESST | Earth Science Search Tool |
| ESTAR | Electrically Scanned Thinned Array Radiometer |
| ESTEC | European Space Research and Space Technology Centre |
| ESTMS | EOC Spacecraft Time Management Software |
| ESTOL | EOS Standard Text and Operation Language |
| ESUS | ECS Scientist User Survey |
| ESWG | EOSDIS Security Working Group |
| ET | Evapo-Transpiration |
| ET | Ephemeris Tool |
| ETE | End-To-End |
| ETFSP | Enhanced Technology Flight Segment Prototype |
| Ethernet | Low-Level Protocol for High-Speed Networks |
| ETL | EOS Team Lead |
| ETM | Engineering Test Model |
| ETM+ | Enhanced Thematic Mapper Plus (Landsat 7) |
| ETR | Element Test Review |
| ETR | Eastern Test Range |
| ETRD | Ebnet Traffic Requirements Database |
| ETRO | Estimated Time Return to Operations |
| ETS | EOS Test System |
| ETS | Electronic Test Signal |
| ETS | Emissivity/Temperature Separation |
| ETS | EOSDIS Test System |
| ETS-VII | Engineering Test Satellite - Vii (Japan) |
| ETSF | Eoc Training Simulator Facility |
| ETSF | EOS Telemetry Simulator Facility |
| ETSF | EOSDIS Test System Facility |
| ETTS | ECS Trouble Ticketing System |
| EU | Engineering Unit |
| EUI | Epoch User Interface |
| EUMETSAT | EUropean organization for the exploitation of METeorological SATellites |
| EUMS | ESDIS User Model Scenario |
| EURECA | European Retrievable Carrier |
| EUV | Extreme Ultraviolet |
| EUVE | Extreme Ultraviolet Explorer |
| EVI | Enhanced Vegetation Index |
| EVP | EDG Valids Processing |
| EVR | ECS Verification Report |
| EWCIP | Extended Web Communication Interface Prototype |
| EWR | Eastern-Western Range (Safety document header) |
| Exotech | Portable, 4-Band VIS-NIR Radiometer |
| F | Back to top |
| F&PRS | Functional and Performance Requirements Specification |
| F&PS | Functional and Performance Specification |
| F/L | Forward Link |
| F/P-INT | Fabry Perot Interferometer |
| FACE | Florida Area Cumulus Experiment |
| FAM | File Access Methods |
| FAM | Forward-Viewing Analog-Electronic Module (MODIS) |
| FAME | Formatting And Multiplexing Equipment |
| FAPAR | Fraction of Absorbed Photosynthetically Active Radiation |
| FAQ | Frequently Asked Questions |
| FAR | Federal Acquisition Regulation |
| FAR | Final Acceptance Review |
| FARM | Frame Acceptance Reporting Mechanism |
| FAS | FOS Analysis Subsystem |
| FASINEX | Frontal Air Sea Interaction Experiment |
| FAST | Fast Auroral Snapshot Explorer |
| FAST-L7A | FAST-Landsat 7 Format |
| FAT | Factory Acceptance Test |
| FC | Fiber Channel |
| FC | Flight Controller |
| FC-AL | Fiber Channel-Arbitrated Loop |
| FCA | Functional Configuration Audit |
| FCAPS | Fault, Configuration, Accountability, Performance and Security |
| FCDAS | Fairbanks Command and Data Acquisition Station |
| FCI | Functional Configuration Identification |
| FDAC | Failure Detection And Correction |
| FDD | Functional Design Document |
| FDD | Flight Dynamics Division (GSFC Code 550) |
| FDDI | Fiber Distributed Data Interface |
| FDF | Flight Dynamics Facility (Replaced By FDS) |
| FDFEPHEM | FDF-Generated Definitive Orbit Data |
| FDIR | Fault Detection and Isolation Recovery |
| FDIR | Fault Data Identification and Reporting |
| FDM | Frequency Division Multiplexing |
| FDM | FOS Data Management Subsystem |
| FDM | Fill/Drain Module |
| FDMA | Frequency Division Multiple Access |
| FDOA | Flight Dynamics Operations Area |
| FDR | Fds Design Review |
| FDS | Flight Dynamics System |
| FDS | Flight Data System |
| FDSTP | FDS Test Plan |
| FDT | Flight Dynamics Team |
| FEC | Forward Error Correction |
| FED | Facilities Engineering Division |
| FED | Frame Encapsulator/Decapsulator (ECOM) |
| FED-STD | Federal Standard |
| FEICD | FDS External Interface Control Document |
| FEL | Front End Local Area Network |
| FEM | Finite Element Model |
| FEP | Front End Processor |
| FERF | Far End Receive Failure |
| FET | Field Effect Transistor |
| FEWS | Famine Early Warning System |
| FF | Free Flight |
| FFT | Fast Fourier Transform |
| FGDC | Federal Geographic Data Committee |
| FGGE | First GARP Global Experiment |
| FIRMS | Fire Information for Resource Management System |
| FIFE | First ISLSCP Field Experiment 1 |
| FIP | Federal Information Processing |
| FIPS | Federal Information Processing Standard |
| FIRE | First ISCCP Regional Experiment |
| FISOL | Fault Isolation |
| FIX | Federal Internet Exchange |
| FK | Foreign Key |
| FL | Floating Point Data Type (32 Bit) |
| FL | Forward Link |
| FLAW | Flight Anomaly Worksheet |
| FLC | Fine Loop Control |
| FLC | Federal Laboratory Consortium |
| FLD | First Level Destination |
| FLDB | Fileset Location Database |
| FLI | Fluorescence Line Imager |
| FLID | First Look Input Data |
|
| FLOPS | Floating-Point Operations Per Second |
| FLP | Flight Load Package |
| FLP | Forward Link Processor |
| FLPC | Forward Link Physical Channel |
| FLPC | Forward Link Processing Channel |
| FLPF | Forward Link Processing Function |
| FLPP | Forward Link Physical Port |
| FLS | Flight Standard |
| FLSS | Forward Link Service Status |
| FltSW | Flight Software |
| FLUXNET | Flux Network |
| FM | Fault Management |
| FM | Frequency Modulation |
| FM’s | Flight Models |
| FMAS | Fault Management Application Service |
| FMEA | Failure Mode and Effects Analysis |
| FMECA | Failure Modes, Effects, Criticality Analysis |
| FMG | File Management |
| FMH | Free Molecular Heating |
| FMI | Finnish Meteorological Institute - Finnish Space Agency |
| FMI | Finnish Meteorological Institute |
| FMM | Folding Mirror Mechanism |
| FMT | Flight Software (Fsw) Maintenance Team |
| FMU | Formatter/Multiplexer Unit |
| FNL | Final Analysis and Forecast System, Global Analysis |
| FNS | Fiber Network Services |
| FOC | Full Operational Capability |
| FOH | Flight Operations Handbook |
| FOIA | Freedom Of Information Act |
| FOLD | Federally-Owned Landsat Data |
| FOM | Flight Operations Manager |
| FOO | Flight Of Opportunity |
| FOO | Flight Operations Office |
| FOP | Flight Operations Procedures |
| FOP | Frame Operations Procedure |
| FOPR | Flight Operations Procedures Review |
| FOR | Flight Operations Review |
| FOR | Field Of Regard (the Total Sweep Available for Instantaneous Fields of View) |
| FORMATS | FDF Orbital and Mission Aids Transformation System |
| FORR | Flight Operations Readiness Review |
| FORTE | Fast on Orbit Recording of Transient Events |
| FOS | Flight Operations Segment (ECS) |
| FOSI | Formatting Output Specification Instance |
| FOT | Flight Operations Team |
| FOV | Field Of View |
| FOWG | Flight Operations Working Group |
| FP | Floating Point |
| FPA | Floating Point Arithmetic |
| FPA | Focal Plane Array |
| FPA | Focal Plane Assembly |
| FPAR | Fraction of Photosynthetic Radiation (Absorbed By Vegetation) |
| FPD | Flight Projects Directorate |
| FPDMSS | Flight Projects Directorate Multidiscipline Support Services |
| FPGA | Field Programmable Gate Array |
| FPM | Fine Point Mode |
| FPMH | Failures Per Million Hours |
| FPRR | Flight Production Readiness Review |
| FPS | Fast Packet Switch |
| FPT | Filter/Pressure Transducer (PS) |
| FQT | Formal Qualification Testing |
| FR | Frame Relay |
| FRB | Failure Review Board |
| FRC | Federal Record Center |
| FRD | Functional Requirements Document |
| FRDS+ | Failure-Resistant Data System Plus |
| FREESTAR | Fast Reaction Experiments Enabling Science Technology Applications and Research |
| FRF | Frame Relay Forum |
| FRGF | Flight Removable Grapple Fixture |
| FRM | FOS Resource Management Subsystem |
| FRN | Frame Routing Network |
| FRR | Flight Readiness Review |
| FRS | File Retrieval Subsystem |
| FS | File Structure (Use File-Structure for EDHS Search) |
| FS | Flight Segment |
| FSB | Flight Software Branch |
| FSD | Flight Systems Division |
| FSDD | Flight Software Design Document |
| FSDR | Final System Design Review |
| FSE | Flight Support Equipment |
| FSE | Fot Spacecraft Evolutions |
| FSK | Frequency-Shift Keying |
| FSM | Flight Systems Manual |
| FSME | Flight Software Maintenance Element |
| FSMG | Flight Software Maintenance Group |
| FSMS | File and Storage Management System |
| FSOM | Flight System Operations Manual |
| FSS | Flight Support System |
| FSS | Fine Sun Sensor |
| FSSP | Forward Scattering Spectrometer Probe |
| FST | Field Support Terminal (ECS) |
| FST | Flight Support Team |
| FST | Flight Simulation Test |
| FSTB | Flight Software Test Bed |
| FSTL | Flight Support Team Lead |
| FSTR | Flight Systems Test Requirements |
| FSW | Flight Software |
| FSWS | Flight Software Subsystem |
| FTA | Transparent File Access |
| FTAM | File Transfer, Access, and Management |
| FTAM | File Transfer Access Method |
| FTDS+ | Failure-Tolerant Disk Systems Plus |
| FTE | Factory Test Equipment |
| FTGT | First TDRSS Ground Terminal |
| FTL | FOS Telemetry Subsystem |
| FTM | File Transfer Management |
| FTM | Filter/Transducer Module (PS) |
| FTP | File Transfer Protocol |
| FTS | Fourier Transform Spectrometer |
| FTSB | Flight Software Test Bed (or Bench) |
| FUI | FOS User Interface Subsystem |
| FW | Firewall |
| FW | Framework (TES Science Software) |
| FWTK | Firewall Toolkit |
| G | Back to top |
| G/B | Gateway/Bridge |
| G/E C&S | Ground Equipment Control and Status |
| G/S | Ground System |
| G/T | Gain over Temperature |
| G/T | Gain to Noise Temperature Ratio |
| GAC | Global Area Coverage (AVHRR) |
| GAIM | Global Analysis, Interpretation, and Modeling (Program) |
| GAM | General Administrative Message |
| GAME | GOALS Asian Monsoon Experiment |
| GAME | GEWEX Asian Monsoon Experiment |
| GAME-T | GEWEX Asian Monsoon Experiment - Tropics |
| GAMUT | Gas & Aerosol Monitor of the Upper Troposphere |
| GAP | Gap Analysis Program |
|
| GARP | Global Atmosphere Research Program |
| GAS | Get Away Special |
| GASCOFIL | Gas Correlation Filter |
| GAST | Greenwich Apparent Sidereal Time |
| GATE | GARP Atlantic Tropical Experiment |
| GATT | Government Acceptance Test Team |
| GBAD | Ground Based Attitude Determination |
| GBFM | Global Boreal Forest Mapping |
| GC | Global Change |
| GC | Ground Controller |
| GC/MS | Gas Chromatograph Mass/Sepctrometer |
| GCC | Global Change Category |
| GCC | Goddard Communication Coordinator |
| GCC | Ground Command Count |
| GCDIS | Global Change Data and Information System |
| GCE | Ground Control Equipment |
| GCF | Ground Communications Facility (DSN) |
| GCIP | GEWEX Continental-Scale International Project |
| GCLDC | Global Change Landsat Data Collection |
| GCM | General (or global) Circulation Model |
| GCM | Ground Control Message |
| GCM | General Circulation Model |
| GCMD | Global Change Master Directory |
| GCMR | Ground Configuration Message Request |
| GCMR | Ground Control Message Request |
| GCMR | Global Circulation Model Request |
| GCNAM | Global Climate Middle Atmosphere Model |
| GCOS | Global Climate Observing System |
| GCP | Ground Control Point |
| GCRP | Global Change Research Program |
| GCSS | GEWEX Cloud System Study |
| GCT | Geo-Coordinate Transformation |
| GCTE | Global Change and Terrestrial Ecosystems (IGBP) |
| GCTP | General Cartography Transformation Package |
| GDAAC | Goddard Distributed Active Archive Center |
| GDAO | Goddard [Space Flight Center] Data Assimilation Office |
| GDAS | Global Data Simulation Model |
| GDAS | Global Data Assimilation System |
| GDC | GeoData Center (University of Alaska, Fairbanks) |
| GDE | Gimbal Drive Electronics |
| GDPS | Ground Data Processing System |
| GDPS | Ground Data Processing Software |
| GDR | Geophysical Data Record (JPL) |
| GDS | Ground Data System |
| GDS | Global Directory Services |
| GEBA | Global Energy Balance Archive |
| GEDEX | Greenhouse Effect Detention Experiment |
| GEIA | Global Emissions Inventory Activity |
| GEMs | Graphite Epoxy Motors |
| GEMS | Global Environment Monitoring System |
| GENESIS | Global Environmental and Ecological Simulation of Interactive Systems |
| GEO | Geostationary Earth Observation |
| GEO | Geosynchronous Earth Orbit |
| GEO | Geostationary Earth Orbiter |
| GEOCOMP | GEOcoding and COMPositing system |
| GEOS | Goddard Earth Observing System |
| Geosat | Geodetic Satellite |
| GEOTAIL | Geomagnetic Tail Laboratory |
| GeoTIFF | Geographic Tagged Image File Format |
| GERB | Geostationary Earth Radiation Budget |
| GES DISC | GSFC Earth Sciences Data and Information Services Center |
| GESSEP | GSFC Earth Space Science Education Project |
| GETS | General Environmental Test Specification |
| GEVS | General Environmental Verification Specification |
| GEVS-SE | General Environmental Verification Specification for STS & ELV, Payloads, Subsystems, and Components |
| GEWEX | Global Energy and Water Cycle Experiment |
| GFCR | Gas Filter Correlation Radiometer |
| GFDL | Geophysical Fluid Dynamics Laboratory |
| GFE | Government Furnished Equipment |
| GFI | Government Furnished Information |
| GFLOPS | Giga (10**9) FLoating point Operations Per Second |
| GFM | Global Fault Manager |
| GFM | Global Fault Management |
| GFM | Grating and Field Mirror (OPB) |
| GFO | Geosat Follow-On |
| GFP | Government Furnished Property |
| GFRP | Graphite Fiber-Reinforced Plastic |
| GFSW | GLAS Flight Software |
| GFY | Government Fiscal year |
| GFZ | GeoForschungs Zentrum (Potsdam, Germany) |
| GGD | Global Geocryology Database |
| GGI | Global Positioning System Geoscience Instrument |
| GGP | Gateway-to-Gateway Protocol |
| GGS | Global Geospace Science |
| GGT | Gravity Gradient Torques |
| GHA | Greenwich Hour Angle |
| GHCC | Global Hydrology and Climate Center |
| GHCN | Global Historical Climatology Network |
| GHRC | Global Hydrology Resource Center |
| GI | Global Imager |
| GIBS | Global Imagery Browse Services |
| GIDEP | Government Industry Data Exchange Program |
| GIF | Graphical Interchange Format |
| GIGAPOP | Gigabit Point-of-Presence |
| GIIS | General Instrument Interface Specification |
| GIIS | General Instrument Interface Specifications |
| GIM | Global Integration and Modeling |
| GIMMS | Global Inventory Modeling and Monitoring Study |
| GIMTACS | GOES I-M Telemetry and Command System |
| GIOP | General Inter-ORB Protocol |
| GIP | Guest Investigator Program |
| GIRD | General Interface Requirements Document |
| GIS | Geographical Information System |
| GISP | Greenland Ice Sheet Program |
| GISS | Goddard Institute for Space Studies |
| GIT | Group Integration Test |
| GKS | Graphical kernel system |
| GL | Generation Language |
| GLA | Goddard Laboratory for Atmospheres |
| GLAS | Geoscience Laser Altimeter System |
| GLAST | Gamma Ray Large-Area Space Telescope |
| GLCTS | Global Landcover Test Site Initiative |
| GLI | Global Imager |
| GLIMS | Global Land and Ice Monitoring from Space |
| GLIS | Global Land Information System (EDC) |
| GLL | Gallileo |
| GLM | Geostationary Meteorological Satellite |
| GLOBE | Global Backscatter Experiment |
| GLOBE | Global Learning and Observations to Benefit the Environment |
| GLOBEC | Global Ocean Ecosystem Dynamics |
| GLOCHEM | Global Observations of Atmospheric Chemistry |
| GLRS | Geoscience Laser Ranging System |
| GLRS-A | Geoscience Laser Ranging System Altimeter |
| GLRS-R | Geoscience Laser Ranging System Ranger |
| GMAO | Global Modeling and Assimilation Office |
| GMI | Goddard Management Instruction |
| GMPCS | Global Mobile Personal Communications Services |
| GMR | Giant Magnetorisistive |
| GMS | Geostationary Meteorological Satellite |
| GMST | Greenwich Mean Sidereal Time |
| GMT | Greenwich Mean Time |
| GN | Ground Network |
| GN&C | Guidance, Navigation and Control |
| GN&CS | Guidance, Navigation, and Control Subsystem (Terra AM-1) |
| GNATS | Gnu Anomaly Tracking System |
| GNC | Gatineau, Canada (satellite ground station) |
| GNCC | Guidance, Navigation & Control Controller |
| GNCC | Guidance, Navigation & Control Center |
| GNMP | Government Network Management Profile Protocol |
| GNMP | GOSIP network management protocol |
| GNP | Gross National Product |
| GNS | Ground Network System |
| GNSS | Ground network scheduling system |
| GOALS | Global Ocean-Atmosphere-Land System (WCRP program) |
| GOE | Ground Operations Exercise |
| GOES | Geostationary Operational Environmental Satellite |
| GOFC | Global Observation of Forest Cover |
| GOLD | Global On-Line Directory (NSIDC) |
| GOME | Global Ozone Monitoring Experiment |
| GOMI | Global Ozone Monitoring Instrument |
| GOMOS | Global Ozone Monitoring by Occultation of Stars (ESA) |
| GOMR | Global Ozone Monitoring Radiometer |
| GONG | Global Oscillations Network Group |
| GOOS | Global Ocean Observing System |
| GOPM | Goddard Orbital Parameters Message |
| GOS | Geomagnetic Observing System |
| GOSIP | Government Open Systems Interconnection Profile |
| GOTS | Government Off-The Shelf |
| GOWG | Ground Operations Working Group |
| GP4 | General Perturbations Theory |
| GPC | Global Positioning Center |
| GPCC | Global Precipitation Climatology Centre (Frankfurt, Germany) |
| GPCP | Global Precipitation Climatology Project |
| GPD | Goddard Policy Directive (formerly called GMI) |
| GPG | Goddard Procedures and Guidelines (formerly called GHB) |
| GPG | Goddard Procedures and Guidelines |
| GPI | Global Precipitation Index |
| GPIB | General Purpose Interface Bus (computer common bus – HP) |
| GPL | G1 Parameter List |
| GPP | Gross Primary Productivity |
| GPP | General-Purpose Processor |
| GPPDI | Global Primary Production Data Initiative |
| GPROF | Goddard PRO Filing algorithm for instantaneous rain retrieval |
| GPS | Geophysical Products System |
| GPS | Global Positioning System |
| GPS | Global Positioning Satellite |
| GPS | Geophysical Processor System |
| GPSDIS | Global Positioning System Data Information System (JPL) |
| GPSDR | Global Positioning System Demonstration Receiver |
| GPSOS | Global Positioning Sensor Occultation System |
| GPSR | Global Positioning Satellite Receiver |
| GPSSS | Global Positioning System Sustaining Support |
| GPT | Generic Protocol Translator |
| GPTS | Ground Power Test Set |
| GR | Gradient Ratio |
| GRACE | Gravity Recovery And Climate Experiment |
| GRASP | Graphical and Statistical Data Analysis Package |
| GRAVITE | Government Resource for Algorithm Verification, Independent TEsting |
| GRD | Geo-rectified Radiance Product (MISR) |
| GRDC | Global Runoff Data Center |
| GREM | Geopotential Research Explorer Mission |
| GRFM | Global Rainforest Mapping Project |
| GRI | Ground Reference Image |
| GRIB | Gridded Binary |
| GRID | [UNEP] Global Resource Information Database |
|
| GRIPS | Ground Systems Development Software Requirements Inspection Planning Sheet |
| GRIS | Global Resources Information System |
| GRP | Geophysical Research Program |
| GRT | Ground Receipt Time |
| GS | Ground Segment |
| GS | [EOS] Ground System |
| GS | Geological Survey |
| GS | Global Survey |
| GS | Ground System |
| GS&O | Ground Systems and Operations |
| GSAS | GLAS Science Algorithms System |
| GSCT | Ground System Compatibility Test |
| GSDE | Ground System Development Environment |
| GSDS | Ground System Design Specifications |
| GSE | Ground Support Equipment |
| GSE | Government Supplied Equipment |
| GSEF | GLAS Sustaining Engineering Facility |
| GSESW | Ground Support Equipment Software |
| GSFC | Goddard Space Flight Center |
| GSI | Government Source Inspection |
| GSI | Ground System Integration |
| GSIF | Ground Station Interface Facility |
|
| GSIM | Ground System Integration Manager |
| GSIP | Ground System Internet Protocol Processor |
| GSIP | Ground Station Interface Processor |
|
| GSIWG | Ground System Integration Working Group |
| GSJ | Geological Survey of Japan |
| GSM | Global System for Mobile Communications |
| GSMF | GLAS Software Maintenance Facility |
| GSMK | Gaussian Minimum Shift Keying |
| GSMS | Ground System Management Subsystem (ASTER) |
| GSMST | Ground Segment Mixed Simulation and Test |
| GSO | Global Server Object |
| GSOC | Guide Star OCcultation |
| GSOP | Ground System Operations Project |
| GSR | Ground System Review |
| GSRB | Ground System Requirements Baseline |
| GSRD | Ground System Requirements Document |
| GSS | Ground Support System |
| GSS | Generic Security Standard |
| GSSM | Ground Systems Study Manager |
| GSTDN | Ground Spaceflight Tracking and Data Network |
| GSTDN | Goddard Space Flight Tracking and Data Network |
| GT | Ground Terminal |
| GTAS | Generic Trending and Analysis System |
| GTC CB | GDAAC Testbed Change Control Board |
| GTCE | Global Tropospheric Chemistry Experiment |
| GTDS | Goddard Trajectory Determination System |
| GTDU | Ground Transfer Data Unit |
| GTE | Global Tropospheric Experiment |
| GTOPO30 | Global 30 Arc-Second Elevation Data Set |
| GTOS | Global Terrestrial Observing System |
| GTS | Global Telecommunications System |
| GTS | Ground Test System |
| GTT | Ground Truth Terminal |
| GTWAY | Gateway [for Version 0 interoperability] |
|
|
| GUI | Graphical User Interface |
| GURP | Goddard Uncosted Reduction Project |
| GV | Ground Validation |
| GV | TRMM Ground Verification |
| GVaP | GEWEX water Vapor Project |
| GVSC | Generic VHSIC Spaceborne Computer |
| GWE | Global Weather Experiment |
| GWP | Global Warming Potential |
| GWS | Gateway Service |
| GXA | Gimballed X-band Antenna |
| H | Back to top |
| H&CS | Harness and Coax Subsystem |
| H&S | Health and Safety |
| H/R I/F | High-Rate Interface |
| HAB | Habitation Module Shuttle/Space Station |
| HAB | Harmful Algal Blooms |
| HAC | Hughes Aircraft Corporation |
| HAD | Hardware Data Acquisition |
| HAIRS | High Accuracy Inter-Satellite Ranging System |
| HAIS | Hughes Applied Information Systems (ECS Team) |
| HAL | Hardware Abstraction Layer |
| HALE | High Altitude Long Endurance |
| HALOE | Halogen Occultation Experiment |
| HAPEX | Hydrological-Atmospheric Pilot Experiment |
| HAPS | Hazardous Air Pollutant Standards |
| HARC | Houston Advanced Research Center |
| HC | Host Controller |
| HCA | Heater Control Assembly |
| HCCL | Half Crystal Can Latching (relay) |
| HCD | Hardware Command Distribution |
| HCDN | Hydro-Climatic Data Network |
| HCE | Hardware Configuration Engineer |
| HCE | Heater Controlled Electronics |
| HCFC | Hydrochlorofluorocarbons |
| HCL | Hughes Class Library |
| HCMM/AEM-1 | Heat Capacity Mapping Mission/Applications Explorer Mission |
| HCR | HDF EOS Configuration Record |
| HD | High Density |
| HDA | Hardware Data Acquisition |
| HDDR | High Data Rate Recorder |
| HDDT | High-Density Digital Tape |
|
| HDE | Heater Drive Electronics |
| HDF | Hierarchical Data Format |
| HDF-EOS | Hierarchical Data Format - Earth Observing System |
| HDLC | High Level Data Link Control |
| HDOS | Hughes-Danbury Optical Systems (Company) |
| HDQ | High-Speed Data Queue |
| HDRM | Hold Down and Release Mechanism |
| HDRR | High Data Rate Recorder |
| HDRS | Hold Down and Release System (Solar Array) |
| HDRS | Hold Down Release System |
| HDS | Horizontal Display Shift |
| HDSL | High-Speed DSL |
| HDT | High Density Tape |
| HDT | Harmonic Drive Technologies (Company) |
| HEA | Head-End Assembly |
| HEAO | High-Energy Astronomy Observatory |
| HEAT | Hitchhiker Experiments Advancing Technology |
| HEC | Header Error Control |
| HEC | Header Error Check |
| HEDS | Human Exploration and Development of Space |
| HEIFE | Heihe Basin Field Experiment |
| HEO | High Earth Orbit |
| HESSI | High Energy Solar Spectroscopic Imager |
| HF | High Frequency |
| HFC | Hybrid Fiber Coax |
| HGA | High Gain Antenna (Terra AM-1) |
| HGML | Hyper Graphics Markup Language (Graphical Alternative to HTML) |
| HH | Horizontal, Horizontal Polarization |
| HI | Human Interactions |
| HiFD | High-Capacity Floppy Disk |
| HIFE | Hardware Interface Emulator |
| HIMSS | High-Resolution Microwave Spectrometer Sounder (Replaced By MIMR) |
| HIPPI | High Performance Parallel Interface |
| HIRDLS | High Resolution Dynamics Limb Sounder |
| HIRIS | High-Resolution Imaging Spectrometer |
| HIRRLS | High-Resolution Research Limb Sounder |
| HIRS | High-Resolution Infrared Sounder |
| HIRS/2 | High Resolution Infrared Radiation Sounder Version 2 |
| HIS | High-Resolution Interferometer Sounder |
| HIT | Heavy Ion Telescope (TEDA) |
| HK1 | Housekeeping 1 data stream (realtime and playback) |
| HLDC | High-Level Discrete Commands |
| HLE | High Level Event |
| HLL | High Level Language |
| HLPC | High Level Pulse Commands |
| HMCF | Hyperbolic Maintenance and Checkout Facility |
| HMD | Hardware Maintenance Depot |
| HMI | Human Machine Interface |
| HMMP | Hyper Media Management Protocol |
| HMMR | High-Resolution Multifrequency Microwave Radiometer |
| HMMS | Hyper Media Management Schema |
| HMOM | Hyper Media Object Manager |
| HNLC | High Nutrient, Low Chlorophyll |
| HOL | Higher Order Language |
| HOLAP | Hybrid Online Analytical Processing |
| HOM | Hotine Oblique Mercator |
| HOSC | Huntsville Operations Support Center |
| HotJava | Sun Microsystems web browser, Written in Java |
| HPA | High Power Amplifier |
| HPC | High Pulse Command |
| HPC | Hand-Held PC |
| HPCC | High Performance Computing Center |
| HPCC | High Performance Computing and Communications |
| HPCE | High Power Control Electronics |
| HPDI | High Speed Parallel Digital Interface |
| HPF | High-Performance Fortran |
| HPOV | Hewlett Packard Open View (COTS Product) |
| HPPI | High Performance Parallel Interface |
| HQAM | Hardware Quality Assurance Manual |
| HR | High Rate |
| HRC | High Rate Channel |
| HRD | Hi-Rate Science (X-Band) Data |
| HRDCW | High Rate Data Cable Way |
| HRDH | High-Rate Data Handling |
| HRDI | High Resolution Doppler Interferometer |
| HRDL | High Rate Data Link |
| HRDM | High-Rate Demultiplexer |
| HRFM | High-Rate Frame Multiplexer |
| HRG | Hemispherical Resonator Gyro |
| HRG | High Rate Gyro |
| HRIS | High-Resolution Imaging Spectrometer |
| HRM | High-Rate Multiplexer |
| HRMS | High Rate Matrix Switch |
| HRMSI | High Resolution Multispectral Stereo Imager |
| HROI | High-Resolution Optical Instrument |
| HRPT | High-Resolution Picture Transmission (AVHRR) |
| HRRL | High Rate Return Link |
| HRS | High Rate Switch |
| HRS | High Resolution Spectrograph |
| HRS | High Resolution Spectrometer |
| HRS | Heat Rejection System (AIRS) |
| HRS | High Rate Science |
| HRS | High Rate Simulator |
| HRSR | High-Resolution Scanning Radiometer (NOAA) |
| HRTR | High-Rate Tape Recorder |
| HRTTS | High Rate Telemetry Test Set |
| HRV | High-Resolution Video (SPOT) |
| HS | High-Speed |
| HSB | Humidity Sounder - Brazil (Derivative of AMSU-B, Replacing MHS) |
|
| HSC | High-Speed Channel |
| HSCT | High-Speed Civil Transport |
| HSIM | High-Speed Interface Module |
| HSM | Hierarchical Storage Management |
| HSMT | Helical Scan Magnetic Tape (Videotape) |
| HSRP | High Speed Research Program |
| HSS | High Speed Serial |
| HSSI | High-Speed Serial Interface |
| HST | Hubble Space Telescope |
| HSTF | High-Speed Telemetry Formatter |
| HSTRA | High-Speed Token Ring Alliance |
| HSTX | Hughes Science Technology Excellence (Now RSTX) |
| HTF | Humid Tropical Forest |
| HTI | Hughes Training Inc. (Now RTI) |
| HTPB | Hydroxyl-Terminated Polybutediene |
| HTS | High-Rate Test System |
| HUBEX | Huaihe Basin Experiment |
| HVAC | High Voltage Alternating Current |
| HWCI | Hardware Configuration Item |
| HWI | Hardware Interface |
| HWM | High Water Mark |
| HX | Heat Exchanger |
|
| HZB | Hazard Bus |
| I | Back to top |
| I&A | Identification and Authentication |
| I&AT | Integration and Acceptance Test |
| I&C | Installation and Checkout |
| I&T | Integration and Test |
| I&T | Information and Technology |
| I&TM | Integration and Test Manager |
| I&TT | Integration and Test Team |
| I-SIPS | ICESat Science Investigator-led Processing System |
| I-Team | Integration Team |
| I/O | Input/Output |
| IA | Interagency Agreement |
| IA | Interface Adapter |
| IA | Implementation Agreement |
| IAB | Internet Architecture Board |
| IABP | International Arctic Buoy Program |
| IAC | Instrument Alignment Cube |
| IACO | Integration Assembly and Checkout |
| IACR | ICESat Activity Change Request |
| IAD | Interface Agreement Document |
| IADB | Interface Analysis Database |
| IADL | Instrument Activity Deviation List |
| IAE | Instrument Accommodation Engineer |
| IAI | Inter-American Institute |
| IAL | Instrument Activity List |
| IALE | Individual Annual Loss Expectancy |
| IAM | Interface Adapter Module |
| IAM | Interface Adapter Model |
| IAMS | Integrated Assessment Models |
| IANA | Internet Assigned Numbers Authority |
| IAR | Independent Architecture Review |
| IARC | International Arctic Research Center |
| IAS | Image Assessment System |
| IAS | Instrument Analog Slice (for Non-GRID Accommodation) |
| IAS | Instrument Activity Specification |
| IAS | Inventory Archive System |
| IASI | Infrared Atmospheric Sounding Interferometer |
| IASS | Instrument Analysis Support Subsystem |
| IATO | Independent Acceptance Test Organization |
| IAU | International Astronomical Union |
| IAVCEI | International Association of Volcanology and Chemistry of the Earth’s Interior |
| IBP | International Biomed Program |
| IBR | Internal Baseline Review |
| IBS | Integrated Biosphere Simulator |
| IC | Internal Calibration |
| IC | Integrated Circuit |
| IC MON | Interconnect Monitor |
| ICA | Interface Control Agreement |
| ICAI | Interactive Computer-Aided Instruction |
| ICAS | Interactive CCR Automation System |
| ICC | Integrated Circuit Card |
| ICC | Instrument Control Center (ECS) (ASTER) |
| ICCCM | Inter-Client Communication Conventions Manual (X Window System) |
| ICD | Interface Control Document |
| ICD | Interface Control Drawing |
| ICDR | Instrument Critical Design Review |
| ICE | International Cometary Explorer |
| ICE | In-Circuit Emulator |
| ICE | Instrument Contingency Exercise |
| ICE | Inductosyn Electronics (HSB) |
| ICESat | Ice, Cloud and Land Elevation Satellite |
| ICF | Instrument Control Facility (ECS) |
| ICF | International Cryptography Network |
| ICI | Inter Carrier Interface |
| ICL | Ingest Client |
| ICL | Interactive Command Language |
| ICLHW | Ingest Client Hardware [Configuration Item] |
| ICM | Increment Change Manager |
| ICM | Internal Calibration Module |
| ICMP | Internet Control Message Protocol |
|
| ICMP | Internet Control Management Protocol |
| ICN | International Communications Network |
| ICO | Initial Check-Out |
| ICO | Integration and Checkout |
| ICO | Installation and Checkout |
| ICO | Intermediate Circular Orbit |
| ICOS | Instrument Control Operations Subsystem |
| ICP | Internet Caching Protocol |
| ICR | Initial Cell Rate |
| ICR | Internal Change Request |
| ICRCCM | Intercomparison of Radiative Codes for Climate Models |
| ICRF | International Celestial Reference Frame |
| ICS | Interoperable Catalogue System |
| ICS | Interpretive Computer Simulator |
| ICS | Integrated Console Script |
| ICSU | International Council of Scientific Unions |
| ICT | Interface Confidence Test |
| ICT | Instrument Confidence Test |
| ICV | Initial Condition Vector |
| ICWG | Interface Control Working Group |
| ICWG | International Coordination Working Group |
| ID | Inside Diameter |
| ID | Instrument Delivery |
| IDAF | IGAC Debits (Africa Project) |
| IDB | Instrument Database |
| IDB | Interim Database |
| IDD | Instrument Description Document |
| IDD | Interface Design Document |
| IDD | Instrument Definition Document |
| IDD | Interface Definition Document |
| IDE | Interactive Development Environment |
| IDEA | International Data Encryption Algorithm |
| IDEN | Integrated Dispatch Enhanced Network |
| IDG | Infrastructure Development Group |
| IDG | Infrastructure Data Group |
| IDIMS | Interactive Data Integration and Management System |
| IDIQ | Indefinite Delivery, Indefinite Quantity |
| IDL | Interface Definition Language |
| IDL | Interactive Data Language |
| IDM | Ion Drift Meter |
| IDN | International Directory Network |
| IDPGF | Institutional Data Products Generation Facility |
| IDPS | Interface Data Processing Segment |
| IDPS | Image Data Processing Subsystem |
| IDR | Internal Design Review |
| IDR | Incremental Design Review |
| IDS | Inter-Disciplinary Science |
| IDS | Infrastructure and Development Support |
| IDSL | Isdn Digital Subscriber Line |
| IE | Information Element |
| IEC | International Electrotechnical Commission |
| IED | Infrastructure Engineering Division |
| IEEE | Institute of Electrical and Electronics Engineers |
|
| IEF | Inventory Exchange Format |
| IEH-2 | International Extreme Ultraviolet Hitchhiker - 2 |
| IEL | Institute of Electrical Engineers Electronic Library |
| IELV | Intermediate Expendable Launch Vehicle |
| IEOS | International Earth Observing System |
| IEP | Integrated Execution Plan |
| IERS | International Earth Rotation Service |
| IET | Interactive Evaluation Tool |
| IET | Instrument Engineering Team |
| IETF | Internet Engineering Task Force |
| IF | Intermediate Frequency |
| IFB | Invitation For Bids |
| IFC | Intensive Field Campaign |
| IFDR | Instrument Final Delivery Review |
| IFJ | In-Flight Jumper |
| IFL | Interfacility Link |
| IFMP | Integrated Financial Management Project |
| IFO | Intensive Field Observation |
| IFOU | Instrument Flight Operations Understanding |
| IFOV | Instantaneous Field Of View |
| IFPRR | Instrument Flight Production Readiness Review |
| Ifremer | Institut francais de recherche pour l’exploitation de la mer |
| IFWG | Interface Working Group |
| IGAC | International Global Atmospheric Chemistry |
| IGAP | International Global Aerosol Program |
| IGBP | International Geosphere-Biosphere Program |
| IGBP-DIS | International Geosphere-Biosphere Program Data and Information System |
| IGCRP | International Global Change Research Program |
| IGDR | Interim Geophysical Data Record (JPL) |
| IGE | International Ground Experiment |
| IGES | Intial Graphics Exchange Specification |
| IGES | Institute for Global Environmental Strategies |
| IGMP | Internet Group Management Protocol |
| IGMP | Internet Group Multicast Protocol |
| IGN | International Geodetic Network |
| IGO | Intergovernmental Science Organization |
| IGOS | Integrated Global Observing Strategy |
| IGP | Interior Gateway Protocol |
| IGPB | International Geosphere and Biosphere Research Program |
| IGPPDI | Global Primary Production Data Initiative |
| IGR | Instantaneous Geographic Region |
| IGS | International Ground Station |
| IGS | Inertial Guidance System |
| IGS | ICEsat Ground System |
| IGSE | Instrument Ground Support Equipment |
| IGST | ICESat Ground System Test |
| IGTWY | External Communications Gateway |
| IH | Internet HUB |
| IHCI | Internetworking Hardware Configuration Item |
| IHDP | International Human Dimensions Programme |
| IHP | International Hydrological Program |
| II | Interdisciplinary Investigator |
| IIAS | Interactive Image Analysis System (ASF) |
| IICF | Interdisciplinary Investigator Computing Facility |
| IICS | International Interoperability Catalog Systems |
| IID | Instrument Interface Document |
| IID | Independent and Identically Distributed |
| IIDM | Ion Drift Meter |
| IIF | Infrastructure Interface |
| IIOP | Internet Inter-ORB Protocol (CORBA message protocol used on a TCP/IP network) |
| IIP | Instrument Incubator Program |
| IIR | Instrument Interface Review |
| IIR | Integrated Information Repository |
| IIR | International Instrument Review |
| IIRD | Instrumentors Interface Requirements Document |
| IIRV | Improved Inter-Range Vector |
| IIS | Inter-Disciplinary Investigators |
| IIVV | Independent Integration, Verification and Validation |
| IIWG | Interdisciplinary Investigator Working Group |
| ILAS | Improved Limb Atmospheric Spectrometer (ADEOS) |
| ILEC | Incumbent Local Exchange Carrier |
| ILG | Infrastructure Library Group |
| ILM | Inventory, Logistics, Maintenance |
| ILMI | Interim Link Management Interface |
| ILMI | Interim Local Management Interface |
| ILN | Intermediate Logic Network |
| ILP | Integrated Logistics Plan |
| ILS | Integrated Logistics Support |
| ILSMT | ILS Management Team |
| ILSO | ILS Office |
| ILSP | ILS Plan |
| ILSPM | ILS Program Manager |
| ILSS | ILS System |
| ILSWD | Integrated Logistics Support Working Database |
| IM | Instrument Manager |
| IMA | Integrated Microwave Assembly |
| IMAGE | Imager for Magnetopause to Aurora Global Exploration |
| IMAP | Internet Message Access Protocol |
| IMARPE | Instituto Del Mar De Peru |
| IMAS | Integrated Multispectral Atmospheric Sounder |
| IMB | Investigator of Micro-Biosphere |
| IMC | Intermodule Connector |
| IMDC | Integrated Mission Design Center |
| IMF | Integrated Metastorage Facility |
| IMG | Interferometric Monitor |
| IMG | Interferometric Monitor for Greenhouse Gases |
| IMOC | International Missions Operations Center |
| IMOC | ICESat Mission Operations Center |
| IMOK | I Am OK (A Computer Bit Uniquely Associated With MODIS Operations) |
| IMP | Instrument Mounting Plate |
| IMP | Imager for Mars Pathfinder |
| IMS | Information Management System (Obsolete ECS Element Name) |
| IMS | Information Management Service |
| IMS | Information Management Subsystem |
| IMS | Information Management System |
| IMSL | International Mathematical and Statistical Libraries |
| IMT | Integrated Mission Timeline |
| IMU | Inertial Measurement Unit |
| INCI | Internetworking Configuration Item |
| INCR | Internal Non-Conformance Report |
| INDOEX | Indian Ocean Experiment |
| INFEO | Information About Earth Observation |
|
| INGST | Ingest Services |
| INGST | Ingest Subsystem |
|
| INHCI | Internetworking Hardware Configuration Item |
| INMS | Ion and Neutral Mass Spectrometer |
|
| INODEX | Indian Ocean Experiment |
| INORAC | INquiry, ORder, and Accounting System (EDC) |
| INPA | Instituto Nacional De Pesquisas Da Amazonia (Brazil) |
| INPE | Instituto Nacional de Pesquisas Espaciais (National Institute for Space Research, Brazilian Ministry of Science and Technology) |
| INRA | Institut National De Recherche Agronomiques (France) |
| INS | Ingest Subsystem (SDPS) |
| INSA | Institut National Des Sciences Appliquees (France) |
| Intelsat | International Telecommunications Satellite |
| INTEX | Intercontinental Chemical Transport Experiment |
| IOA | Integrated Operations Architecture |
| IOC | Initial Operational Capability |
| IOC | Intergovernmental Oceanographic Commission |
| IOC | In-Orbit Checkout |
| IOC | Instrument Operation Center |
| IOCS | I/O Controller Slice |
| IOCS | ICESat Orbit Control Software |
| IOD | Internal Operational Demonstration |
| IOD | Initial Operational Demonstration |
| IODB | Instrument Operational Database |
| IOE | Instrument Operations Exercise |
| IONET | Internet Protocol Operational Network |
| IOP | Intensive Observing Period |
| IOS | Interoperability Subsystem |
| IOS | Inventory and Order System (JPL) |
|
| IOSDL | Institute of Oceanographic Sciences Deacon Laboratory |
| IOST | Instrument Operational Support Terminal |
| IOT | Instrument Operations Team |
| IOT | In-Orbit Test |
| IOTE | In-Orbit Test Equipment |
| IOWG | Instrument Operations Working Group |
| IP | Installation Plan |
| IP | International Partner |
| IP | Intermediate Products |
| IP | Internet Protocol |
| IPA | Inter-Project Agreement |
| IPA | Instrument Platform Assembly |
| IPAIDS | Integrated Payload Articulation and Identification System |
| IPB | In Plane Bending |
| IPC | Instrument Processing Center |
| IPC | Inter-Process Communication |
| IPCC | Intergovernmental Panel on Climate Change |
| IPD | Information Processing Division (GSFC) |
| IPDB | Instruments Database |
| IPDC | International Partner Data Center |
| IPDP | Integrated Product Development Process (Raytheon Process) |
| IPDR | Instrument Preliminary Design Review |
| IPDS | Integrated Product Development System (Raytheon Process) |
| IPDT | Integrated Product Development Team |
| IPDU | Internet Protocol Data Unit |
| IPEA | Internet Protocol Encapsulated Addressing |
| IPEI | Ionospheric Plasma and Electrodynamics Instrument |
| IPF | International Partner Facility |
| IPF | Integrated Processing Facility |
| IPF | Integrated Payload Facility |
| IPF | Integration and Processing Facility (VAFB) |
| IPG | Instrument Planning Group |
| IPGE | International Partners Ground Equipment |
| IPGS | International Partner Ground System |
| IPI | International Partner Interface |
| IPI | Intelligent Peripheral Interface |
| IPICC | International Partners-Instrument Control Center |
| IPM | Internal Propulsion Module |
| IPMOC | International Partners-Mission Operations Center |
| IPng | Internet Protocol, Next Generation |
| IPNOC | Internet Protocol Network Operations Center |
| IPO | Integrated Program Office |
| IPOC | International Partner Operations Center |
| IPOMS | International Polar Orbiting Meteorological Satellite Committee |
| IPPD | Integrated Product Process Development (Raytheon Process) |
| IPPF | International Partner Platform |
| IPS | Integrated Propulsion System |
| IPT | Integrated Product Team |
| IPT | DCE Home Page (IPT) |
| IPTH | Inter Panel Transfer Harness |
| IPU | Internal Power Unit |
| IPX | Internetwork Packet Exchange |
| IPX/SPX | Internetwork Packet Exchange/Sequenced Packet Exchange |
| IQ | Intelligent Query |
| IR | Infrared |
| IR | Interim Release |
| IR&D | Independent Research and Development |
| IR-RAD | Infrared Radiometer |
|
| IRAD | Independent Research And Development |
|
| IRCD | Interface Requirements Control Document |
| IRD | Interface Requirements Document |
| IRE | Institute for Radio-Engineering and Electronics |
| IRE | Instrument Readiness Exercise |
| IRE-RAS | Institute of Radio Engineering - Russian Academy of Science |
| IRI | International Research Institute |
| IRIG | Inter-Range Instrumentation Group |
| IRIG-B | Inter-Range Instrumentation Group B |
| IRIS | Italian Research Interim Stage |
| IRIS | Incorporated Research Institutions for Seismology |
|
| IRM | Information Resources Management |
| IRN | Interface Revision Notice |
| IRP | Instrument Resource Profile |
| IRR | Integrated Requirements Review |
| IRR | Imaging Infrared Radiometer |
| IRR | Incremental Release Review |
| IRRR | Interim Release Readiness Review |
| IRS | Interface Requirements Specification |
| IRS | India Remote Sensing Satellite |
| IRS | Information Retrieval Service (ESA) |
| IRT | Infrared Thermal |
| IRTS | Infrared Temperature Sounder |
| IRU | Inertial Reference Unit |
| IRV | Improved Inter-Range Vector Message |
| IS | Ingest Subsystem |
| IS | Intermediate Schedule |
| IS | Information System |
| IS | Integrated Simulations |
| IS | Instrument Support |
| IS-IS | Intermediate System to Intermediate System |
| ISA | Industry Standard Architecture |
| ISA | Integrated Services Architecture |
| ISAKMP | Internet Secure Association Key Management Protocol |
| ISAM | Indexed Sequential Access Method |
| ISAMS | Improved Stratospheric And Mesospheric Sounder |
| ISAPI | Internet Server API |
| ISAR | Instrument Support Activity Request |
| ISAS | Institute of Space and Astronautical Science (Japan) |
| ISATS | Integrated Spacecraft Automated Test System |
| ISBN | International Standard Book Number |
| ISC | Information Systems Center |
| ISC | Instrument Support Controller |
| ISC | Instrument Support Controller/Current-Short Circuit (ISC) |
| ISCAT | Investigation of Sulfur Chemistry in the Antarctic Troposphere |
| ISCCP | International Satellite Cloud Climatology Project |
| ISDN | Integrated Systems Digital Network |
| ISDS | Inadvertent Separation Destruct System |
| ISEE | International Sun/Earth Explorer |
| ISF | Instrument Support Facility |
| ISFSW | Instrument Support Facility Software |
| ISH | Information Super Highway |
| ISI | Inter-Disciplinary Science Investigation |
| ISI | Interim Support Instruction |
| ISI | Integral Systems, Inc. |
| ISIM | Instrument Simulator |
| ISIO | Instrument Serial I/O (An Electronic Slice) |
| ISIPS | ICEsat Science Investigator-Led Processing System |
| ISIR | Infrared Spectral Imaging Radiometer |
| ISIS | Inflatable Sunshield In Space |
| ISIS | Integrated Systems Kit for the Macintosh |
| ISLE | Individual Single Loss Expectancy |
| ISLSCP | International Satellite Land Surface Climatology Project |
| ISM | Instrument Systems Manager |
| ISN | Intersegment Network |
| ISO | International Standards Organization |
| ISOC | Integrated Science Operations Center |
| ISOC | Internet Society |
| ISOLAN | Isolated Local Area Network |
| ISP | Integrated Support Plan |
| ISP | Integerized Sinusoidal Projection |
| ISPF | Interactive System Productivity Facility |
| ISQL | Interactive SQL |
| ISR | Individual Schedule Request |
| ISR | Input Schedule Request |
| ISR | Instrument Support Room |
| ISS | Internetworking Subsystem (CSMS) |
| ISS | Internet Scanner Safesuite |
| ISSA | International Space Station Alpha |
| ISSN | International Standard Serial Number |
| IST | Instrument Support Toolkit |
| IST | Instrument Support Terminal (ECS) |
| IST | Integrated System Test |
| IST | Ice Surface Temperature |
| IST | Instrument Support Terminal |
| IST | Instrument Star Tracker |
| IST-US | Instrument Support Terminal - United States (At JPL) |
| ISTOK-1 | Infrared Spectroradiometer on Mir |
| ISTP | International Solar and Terrestrial Physics |
| ISTS | Institute for Space and Terrestrial Science |
| ISU | Intermediate Storage Unit |
| ISY | International Space Year (1992) |
| IT | Instrument Team |
| IT | Intelligent Terminal |
| IT&L | Integration Test and Launch |
| IT&V | Integration, Test, and Verification |
| ITAR | International Traffic in Arms Regulation |
| ITCZ | Intertropical Convergence Zone |
| ITE | I&T test Engineer |
| ITFB | Information Technology Federation Board |
| ITG | Internet Telephony Gateway |
| ITIR | Intermediate Thermal Infrared Radiometer |
| ITMM | Integrated Thermal Math Model |
| ITO | Independent Test Organization |
| ITO | Information Technology Outsourcing |
| ITP | Interface Test Program |
| ITP | Integrated Test Plan |
| ITR | Information Technology Resources |
| ITRF | International Terrestrial Reference Frame |
| ITS | Intelligent Terminal Segment (NCC) |
| ITSD | Information Technology and Services Division |
| ITSEC | Information Technology Security Evaluation and Certification |
| ITSO | Information Technology Security Officer |
| ITSS | Information Technology & Support Services (Raytheon) |
| ITT | Integration Test Team |
| ITTP | International Tovs Processing Package |
| ITV | Integration, Test, and Verification |
| ITV | Interactive Television |
| ITVF | Integrated Test and Verification Facility |
| IU | Interface Unit |
| IUS | Inertial Upper Stage |
| IUS | Informix Universal Server |
| IV&V | Independent Verification and Validation |
| IVICS | Interactive Visualizer and Image Classifier for Satellites |
| IVIS | Interactive Video Information System |
| IVS | Interactive Videodisk System |
| IVVF | Independent Verification and Validation Facility |
| IVVF | Integration Verification and Validation Facility |
| IWC | Ice Water Content |
| IWG | Investigator Working Group |
| IWGDMGC | Investigators Working Group on Data Management for Global Change |
| IWP | Ice Water Path |
| IXC | Interexchange Carrier |
| J | Back to top |
| JANET | Joint Academic Network |
| JAROS | Japan Resources Observation System [Organization] |
| JAXA | Japan Aerospace Exploration Agency |
| JCET | Joint Center for Earth Systems Technology |
| JDT | Java Dar Tool |
| JEA | Japan Environmental Agency |
| JEB | Java Earth Browser |
| JEM | Japanese Experiment Module |
| JEM | Joint End-to-End Mission |
| JEOC | Japanese Earth Observing Center |
| JEOS | Japanese Earth Observing System |
| JERS | Japanese Earth Resources Satellite |
| JERS-OPS | Japanese Earth Remote-Sensing Satellite-Ops |
| JEST | Java Earth Science Tool |
| JEXAM | Japanese Experiment of Asian Monsoon |
| JGI | Japex Geoscience Institute |
| JGOFS | Joint Global Ocean Flux Study |
| JICC | Japanese Instrument Control Center |
| JIPS | Janet Internet Protocol Service |
| JMA | Japan Meteorological Association |
| JMR | Jason Microwave Imager |
| JNC | Jet Navigational Charts |
| JODC | Japan Ocean Data Center |
| JORNEX | Jornada Experiment |
| JOST | Joint OMI Science Team |
| JPEG | Joint Photographic Experts Group |
| JPIP | Joint Project Implementation Plan |
| JPL | Jet Propulsion Laboratory |
| JPLAIRSAR | JPL Airborne Synthetic Aperture Radar |
| JPO | Joint Planning Office |
| JPOCC | Japanese Payload Operations Control Center |
| JPOP | Japanese Polar Orbiting Platform |
| JRC | Joint Research Centre (European Commision) |
| JRC | Joint Research Council |
| JSC | Johnson Space Center |
| JSC | Joint Scientific Committee |
| JSDAC | Japanese Science Data Analysis Center |
| JSDIS | Japanese Science Data and Information System |
| JSOCC | Japanese Science Operations Control Center |
| JTM | Job Transfer and Manipulation |
| K | Back to top |
| KDAU | Ku-Band Decryption Authentication Unit |
| Kerberos | Security Protocol Developed By MIT; Base for DCE Security |
| KFTP | Kerberos File Transfer Protocol |
| KI | Constant Current (charge mode) |
| KIIT | Key Interfaces Integration and Test |
| KINEROS | Kinematic Wave Overland Flow, Channel Routing and Erosion Model |
| KLM SDS | Kongsberg Lockheed Martin/Space Data Services |
| KM | Kinematic Mount |
| KM | Key Mechanism |
| KML | Keyhole Markup Language |
| KNMI | Royal Netherlands Meteorological Institute |
| KOMPSAT | Korea Multipurpose Satellite |
| KORMEX | Korean Monsoon Experiment |
| KPM | KSC ELV Program Manager |
| KSA | Ku-Band Single Access |
| KSAF | K-Band Single Access Forward (Service) |
| KSAM | Ku Band Single Access Modulator |
| KSAR | K-Band Single Access Return (Service) |
| KSC | Kennedy Space Center |
|
| ktelnet | Kerberos Telnet |
| KUJ | Kumomoto, Japan Station ID |
| L | Back to top |
| L&A | Launch and Ascent |
| L&EO | Launch and Early Orbit |
| L&EO | Launch and Evaluation Operation |
| L&EO | Launch and Early Operations |
| L&EOOMP | Launch and Early Orbit Operations Management Plan |
| L+ | Launch Plus |
| L- | Launch Minus |
| L-R | Low Rate |
| L/A | Launch and Ascent |
| L/T | Long Term |
| L/V | Launch Vehicle |
| L0-L4 | Level 0 (Zero) Through Level 4 |
| L0R | Level 0 Release |
| L0R | Level 0 Reformatted |
| L0R | Landsat Reformatted Data |
|
|
| L1G | Level 1 Geometrically Corrected |
|
| L1R | Level 1 Radiometrically Corrected |
|
|
| LA | Laser Altimeter |
| LA | Launch of EOS Terra (AM-1) Payload |
| LAC | Local Area Coverage (AVHRR) |
| LAGEOS | Laser Geodynamics Satellite |
| LAI | Leaf Area Index |
| LALT | Laser Altimetry |
| LAM | Laser Altimetry Mission |
| LAN | Local Area Network |
| LANCE | Land Atmosphere Near real-time Capability for EOS |
| Landsat | Land Remote-Sensing Satellite |
| LANE | Local Area Network Emulation |
| LANL | Los Alamos National Laboratory |
| LaRC ASDC | Langley Research Center Atmospheric Science Data Center |
| LaRCNET | Langley Research Center Network |
| LAS | Land Analysis System |
| LASA | Laser Atmospheric Sounder and Altimeter |
| LASAL | Large Aperture Scanning Airborne Lidar |
| LASE | Lidar Atmosphere Sensing Experiment |
| Laser | Light Amplification by Stimulated Emission of Radiation |
| LASP | Laboratory for Atmospheres and Space Physics (University of Colorado) |
| LASP | Laboratory for Atmospheric Studies Project |
| LATI | Landsat Advanced Technology Instrument |
| LaTIS | Langley Research Center's TRMM Information System |
| LAWS | Laser Atmospheric Wind Sounder |
| LBA | Large Scale Biosphere-Atmosphere Experiment in Amazonia |
| LBX | Low Bandwidth X |
| LC | Launch Complex |
| LC | Launch Critical |
| LCC | Launch Control Center |
| LCC | Lambert Conformal Conic |
| LCD | Liquid Crystal Display |
| LCFS-PR | Last Come, First Served With Preemptive Resume |
| LCN | Logistics Control Number |
| LCP | Left Circular Polarized |
| LCU | Library Control Unit |
| LDAP | Lightweight Directory Access Protocol |
| LDAS | Local Data Access System |
| LDB | Long Duration Balloon |
| LDBP | Long Duration Balloon Program |
| LDCM | Landsat Data Continuity Mission |
| LDEF | Long Duration Exposure Facility |
| LDEO | Lamont-Doherty Earth Observatory (Columbia University) |
| LDOPE | Land Data Operational Product Evaluation |
| LDOS | Landsat Data and Operations System |
| LDS | Level Discrete Set |
| LDTS | LPS Data Transfer Subsystem |
| LEA | Log Export API |
| LEC | Local Exchange Carrier |
| LEC | Lan Emulation Client |
| LECS | Local Area Network Emulation Configuration Server |
| LED | Low Energy Detector |
| LED | Light Emitting Diode |
| LEFI | Local Electric Field Instrument |
| LEL | Lower Explosive Limit |
| LEM | Lower Equipment Module |
| LEO | Low Earth Orbit |
| LEO | Launch and Early Orbit |
| LEOP | Launch and Early Orbit Phase |
| LeRC | Lewis Research Center |
| LERTS | Laboratoire d’Etudes Et De Recherches En Teledetection |
| LES | Local Area Network Emulation Server |
| LET | Linear Energy Transfer |
| LE_ARP | Local Area Network Emulation Address Resolution Protocol |
| LF | Long Floating Point Data Type (64 Bit) |
| LFC | Large Format Camera |
| LFM | Local Fault Manager |
| LFS | Local File System |
| LG | Load Generation |
| LGA | Low Gain Antenna |
| LGN | Landsat Ground Network |
| LGS | Landsat Ground System |
| LHC | Left-Hand Circular |
| LHCP | Left Hand Circular (Ly) Polarized |
| LHH | L-Band Hh |
| LHP | Loop Heat Pipe |
| LI | Local Interface |
| LI | Long Integer Data Type (32 Bit) |
| LIBI/O | Library Input/Output |
| LID | Last(Est) Instrument Delivery |
| LIDAR | LIght Detection And Ranging instrument |
| LIDQA | Landsat Image Data Quality and Analysis |
| LIGHTSAR | Lightweight Synthetic Aperture Radar |
| LIMS | Limb Infrared Monitor of the Stratosphere |
| LIRIS | Loaral Infrared Imaging Systems |
| LIS | Lightning Imaging Sensor |
| LISN | Line Impedance Stabilization Network |
| LISP | List Processing (Computer Programming Language) |
| LISS | Linear/Imaging Self Scanner Sensor |
| LITE | Lidar In-Space Technology Experiment |
| LLC | Logical Link Control |
| LLC/SNAP | Logical Link Control/Subnetwork Access Protocol |
| LLHP | Laser Loop Heat Pipe |
| LLIS | Lessons Learned Information System |
| LLNL | Lawrence Livermore National Laboratory |
| LMC | Length Modulation Cell |
| LMCS | Local Multipoint Communications Services |
| LMD | Laboratoire De Meteorologie Dynamique |
| LMD/ARA | Laboratoire De Meteorologie Dynamique/Atmospheric Radiation Analysis Group |
| LMDS | Local Multipoint Distribution Services |
| LMI | Lower Equipment Module Interface Unit |
| LMI | Local Management Interface |
| LMOC | LandSat 7 MOC |
| LMP | Launch Management Plan |
| LMS | Logistics Management Support |
| LMS | Logistics Management System |
| LNA | Low-Noise Amplifier |
| LO | Local Oscillator |
| LOA | Letter Of Agreement |
| LOB | Launch Operations Building |
| LOB | Line Of Balance |
| LOC | Lines Of Code |
| LOC | Loss Of Cell Delineation |
| LOC/mm | Lines Of Code Per Man Month |
| LOCC | Launch Operations Control Center |
| LOE | Level Of Effort |
| LOF | Local Oscillator Frequency |
| LOGSWG | Landsat Operations Ground Segment Working Group |
| LOICZ | Land Ocean Interactions in the Coastal Zone |
| LOM | Logical Object Model |
| LORA | Level Of Repair Analysis |
| LORE | Limb Ozone Retrieval Experiment |
| LOS | Line Of Sight |
| LOS | Loss Of Signal |
| LOWTRAN | USAF-GRL Atmosphere Radioactive Transfer Model |
| LP | Langmuir Probe |
| LPC | Load Power Conditioner |
| LPCE | Low Power Control Electronics (Or Just PCE) |
| LPDAAC | Land Processes DAAC |
| LPDS | Level 1 Product Distribution System |
| LPF | Low Pass Filter |
| LPGS | Landsat Product Generation System (Level 1 Product Generation System for Landsat 7) |
| LPM | Landsat Program Management |
| LPO | Landsat Project Office |
| LPS | Landsat 7 Processing System |
| LPT | Limited Performance Test |
| LR | Laser Retroreflector |
| LR | Low Rate |
| LRA | Laser Retroreflector Array |
| LRAT | Launch Readiness Acceptance Test |
| LRC | Low Rate Channel |
|
| LRD | Launch Readiness Date |
| LRD | Low Rate (S-Band) Data |
| LRDPS | Low Rate Data Processing System |
| LRDS | Launch Readiness Date |
| LRDS | Low Rate Data Switch |
| LRIR | Limb Radiance Inversion Radiometer |
| LRP | Launch Reentry Processor |
| LRPT | Low-Resolution Picture Transmission |
| LRR | Launch Readiness Review |
| LRRD | Low-Rate Real-Time Data |
| LRRL | Low Rate Return Link |
| LRS | Low-Rate System |
| LRS | Low-Rate Science |
| LRS | Laser Reference System |
| LRSP | Low Rate Service Processor |
| LRU | Line Replaceable Unit |
| LRU | Lowest Replaceable Unit |
| LRV | Last Recorded Value |
| LRV | Last Reported Value |
| LS | Lower-Stratosphere |
| LSA | Logistics Support Analysis |
| LSAR | Logistics Support Analysis Record |
| LSB | Launch Services Building |
| LSB | Least Significant Bit |
| LSC | Line Sync Code |
| LSD | Launch Status Display |
| LSD | Logistics Support Depoy |
| LSD | Least Significant Digit |
| LSE | Launch Site Equipment |
| LSE | Land-Surface Emissivity |
| LSE | Launch Support Equipment |
| LSH | Least Significant Half |
| LSIO | Low Speed Serial Input/Output |
| LSM | Local System Management |
| LSM | LAWS System Model |
| LSM | Local System Manager |
| LSM | Land-Surface Model |
| LSO | Logistics Support Office |
| LSP | Land-Surface Parameterizations |
| LSPIM | Land Surface Processes and Interactions Mission |
| LSR | Launch Support Room |
| LSRR | Location Server/Request Router |
| LSSM | Launch Site Support Manager |
| LSSP | Launch Services Support Plan |
| LST | Land Surface Temperature |
| LST | Local Satellite Time |
| LSW | Least Significant Word |
| LTA | Long Term Archive |
| LTAS | Launch Trajectory Ascent System |
| LTC | Long Term Calendar |
| LTER | Long-Term Ecological Research |
| LTIP | Long-Term Instrument Plan |
| LTM | Log Transfer Managers |
| LTOP | Long-Term Operating Plan |
| LTP | Long Term Plan |
| LTSOP | Long-Term Spacecraft Ops Plan |
| LTSP | Long-Term Science Plan |
| LTWG | Landsat Technical Working Group |
| LUCF | Land Use Change Forestry |
| LUT | Look Up Table |
| LV | Launch Vehicle |
| LV | Launch Version |
| LVA | Local Vertical Acquisition |
| LVDC | Launch Vehicle Data Center |
| LVDT | Linear Variable Differential Transducer |
| LVI | Launch Vehicle Interface |
| LVLH | Local Vertical-Local Horizontal |
| LVO | Label Value Object |
| LVS | Launch Vehicle System |
| LVS | Launch Vehicle Simulator |
| LW | Long Wave |
| LWC | Liquid Water Content |
| LWIR | Long-Wave Infrared |
| LWM | Low Water Mark |
| LWP | Liquid Water Path |
| LZ77 | Lampel-Ziv Coding |
| LZAARDS | Level Zero Archive And Retrievable Data System |
| LZDP | Level Zero Data Processing |
| LZP | Level Zero Processing |
| LZPF | Level Zero Processing Facility |
| LZPS | Level Zero Processing System |
| LZW | Lempel-Ziv-Welch Compression Algorithm |
| M | Back to top |
| M&D | Micrometeoroid and Space Debris |
| M&DOD | Mission and Data Operations Directorate |
| M&O | Maintenance and Operations |
| M&S | Management and Status [data] |
| M&SS | Mission and Simulation Software |
| M-POP | Metadata Population |
|
| MA | Multiple Access |
| MAAT | Mean Annual Air Temperatures |
| MAB | Mission Applications Branch |
| MAC | Medium Access Control |
| MAC | Message Authentication Code |
| MAC | Multi-Aircraft Campaign |
| MAC | Multi-Sensor Air Campaign |
| MACAWS | Multiagency Airborne Coherent Atmospheric Wind Soundier |
| MAESA | Measurements for Assessing the Effects of Stratospheric Aircraft |
| MAF | Multiple Access Forward |
| MAG | Magnetospheric Currents and Fields Detector |
| MAGE | Mechanical Aerospace Ground Equipment |
| MAGS | Mackenzie GEWEX Study |
| MAGSAT | Magnetometer Satellite |
| MAHLOVS | Middle And High Latitudes Oceanic Variability Study |
| MAHRSI | Middle Atmosphere High Resolution Spectrograph Investigation |
| MAI | Machine Aided Indexing |
| MAIT | Manufacturing, Assembly, Integration and Test |
| MAM | Mirror Attenuator Mosaic |
| MAN | Metropolitan Area Network |
| MAOS | Multiapplication Operating System |
| MAP | Multiplexer Access Point |
| MAP | Microwave Anisotrophy Probe |
| MAPI | Messaging API |
| MAPS | Measurement of Air Pollution from Satellites |
| MAPS | Millions of Actions Per Second |
| MAR | Multiple Access Return |
| MAR | Mission Analysis Room |
| MARC | Machine Readable Cataloging |
| MAS | Millimeter-Wave Atmospheric Sounder |
| MAS | MODIS Airborne Simulator |
| MASEX | Mass Air Sea Transfer Experiment |
| MASTER | MODIS/ASTER Airborne Simulator |
| MAT | Mission Analysis Tool |
| MAT | Mopitt Activation Timeline |
| MATCALS | Marine’s Air Traffic Control And Landing System |
| MATHML | Mathematical Markup Language (Based on XML Syntax, W3C) |
| MATR | Mopitt Airborne Test Radiometer |
| MAWP | Maximum Actual Working Pressure |
| MaxTTRS | Maximum Time To Restore Service |
| MBLA | Multi-Beam Laser Altimeter |
| MBONE | Multicast Backbone |
| MC | Master Clock |
| MC | Mission Critical |
| MC | Mission Controller |
| MC | Mechanism Controller |
| MC | Memory Controller |
| MCC | Mission Control Center |
| MCE | Miniature Embedded Converter |
| MCF | Metadata Configuration File |
| MCF | Metadata Control File |
| MCF | Meta Content Framework (Data Model for Metadata) |
| McIDAS | Man-Computer Interactive Data Access System |
| MCL | Master Command Load |
| MCNS | Multimedia Cable Network System |
| MCP | Meteorological Communications Package |
| MCP | Master Clock Period |
| MCR | Mission Control Room |
| MCR | Minimum Cell Rate |
| MCS | Multicast Service |
| MCS | Monitor and Control Subsystem |
| MCS | Mesoscale Convective Systems |
| MCSST | Multi-Channel Sea Surface Temperature |
| MCST | MODIS Characterization Support Team |
| MCT | Monitoring and Control Tools |
| MD | Master Directory |
| MD | Maintainability Demonstration |
| MDA | Mechanisms Drive Assembly |
| MDBMS | Multidimensional DBMS |
| MDBS | Mobile Database Station |
| MDD | Mission Description Document |
| MDF | Memory Dump Flag |
| MDI | Mechanical Design Integration |
| MDI | Michelson-Doppler Image |
| MDIS | Metadata Interchange Specification |
| MDM | Multiplexer/Demultiplexer |
| MDP | Multiplexing Data Processor (High Rate) |
| MDR | Mission Design Review |
| MDSDS | Mass Data Storage and Delivery System |
| MDT | Mean Downtime |
| MDU | Missing Data Unit |
| MDUE | Missing Data Unit Entry |
| MDUL | Missing Data Unit List |
| MDW | Metadata Works |
| ME | Message Error |
| ME | Mission Essential |
| MEBS | MODIS Emergency Backup System |
| MEC | Miniature Embedded Converter |
| MECO | Main Engine Cut-Off |
| MEDS | Multidisciplinary Engineering Development Services |
| MEICD | MOC External Interfaces ICD |
| MEL | Multos Executable Language |
| MELV | Medium Expendable Launch Vehicle |
| MEM | Memory Management |
| MEM | Main Electronics Module (MODIS) |
| MEO | Middle Earth Orbit (Satellite) |
| MEOP | Maximum Expected Operating Pressure |
| MEPA | Medium Energy Particle Analyzer |
| MEPED | Medium Energy Proton and Electron Detector |
| MERIS | Medium-Resolution Imaging Spectrometer (ESA) |
| MES | Main Engine Start |
| MESSR | Multispectrum Electronic Self-Scanning Radiometer |
| MET | Mission Elapsed Time |
| MET | Metadata Access (Toolkit) |
| METEOSAT | Geosynchronous Meteorology Satellite (ESA) |
| METI | Ministry of Economy Trade and Industry (Formerly Known As MITI) |
| METOP | Meteorological Operational Weather Satellite |
| METRI | Meteorological Research Institute (Korea) |
| METSAT | Meteorological Satellite |
| METSOAT | European Weather Satellite |
| MEU | Main Electronics Unit |
| MEVDP | Modified Element Volume Dose Program |
| MFD | Master File Directory |
| MFE | Magnetic Field Explorer |
| MFOP | Major Facilities Operations Plan |
| MFPS | Major Frame Processing System |
| MFR | Multilink Frame Relay |
| MGA | Medium Gain Antenna |
| MGDR | Merged Geophysical Data Record |
| MGS | Mars Global Surveyor |
| MGS | Mcmurdo Ground Station, Antarctica |
| MGSE | Mechanical Ground Support Equipment |
| MH | Message Handler |
| MHCI | Management Hardware CI |
| MHS | Microwave Humidity Sounder |
| MHW | Mean High Water |
| MHWCI | Management Hardware Configuration Item |
| MI | Master Index |
| MIB | Management Information Base |
| MIC | Media Interface Connector |
| MIC | Memory Interface Controller |
| MICD | Interface Control Drawing, Mechanical |
| MID | Mechanical Interface Drawing |
| MIDAS | Mobile Agents for Intelligent Data Acquisition Systems |
| MIDI | Musical Instrument Digital Interface |
| MIDL | Microsoft Interface Definition Language |
| MIL | MIL Standard Electronics |
| MIL | Merritt Island (Ground Network) Station |
| MIL-HDBK | Military Handbook |
| MIL-STD | Military Standard |
| MILSTAR | Military Strategic and Tactical Relay |
| MIM | Mission Integration Manager |
| MIMD | Multiple Instructions, Multiple Data |
| MIME | Multipurpose Internet Mail Extension |
| MIMR | Multifrequency Imaging Microwave Radiometer |
| MIO | Multiple Input-Output |
| MIP | Mission Implementation Plan |
| MIP | Mandatory Inspection Point |
| MIPAS | Michelson Interferometric Passive Atmospheric Sounding (ESA) |
| MIPR | Multi-Interagency Procurement Request |
| MIRAS | Mir Infrared Atmospheric Sounder |
| MIRIAM/DOPI | Mir Infrared Atmospheric Measurements/Double Pendulum Interferometer |
| MIRR | Material Inspection and Receiving Report |
| MIS | Management Information System |
| MISR | Multi-angle Imaging SpectroRadiometer |
| MIT | MOC Implementation Team |
| MITC | MO&DSD Interface Capability |
| MITC/EITC | MO&DSD Interface Capability/EGS Interface Test Capability |
| MITI | Ministry of International Trade and Industry (Japan) |
| MIU | Mission Interface Unit |
| MIZEX | Marginal Ice Zone Experiment |
| ML | Memory Load |
| MLA | Multispectral Linear Array |
| MLCI | Management Logistics Configuration Item |
| MLCI | Management Logistics Software CI |
| MLE | Maximum Likelihood Estimation |
| MLELV | Medium-Lite Expendable Launch Vehicle |
| MLI | Multi-Layer Insulation |
| MLI | Machine Language Instruction |
| MLR | Multilinear Recording |
| MLS | Microwave Limb Sounder |
| MLT | Mean Local Time |
| MM | Momentum Management |
| MM | Mode Management |
| MM | Mission Management |
| MM | Mesoscale Model |
| MM | Mission Manager |
| MMA | Mission Management Area |
| MMD | Mean Mission Duration |
| MMDPS | Multi-Mission Display Processing System |
| MMDS | Multichannel, Multipoint Distribution Service |
| MMFD | Multi-Mission Flight Dynamics |
| MMH | Monomethyl Hydrazine |
| MMI | Man-Machine Interface |
| MMIC | Monolithic Microwave Iontegrated Circuit |
| MMO | Mission Management Office |
| MMPA | Marine Mammal Protection Act |
| MMPP | Materials, Mechanical Parts and Processes |
| MMR | Modular Multi-Band Radiometer |
| MMS | Multimission Modular Spacecraft |
| MMS | Mode Management Service |
| MMS | Modular Modeling System |
| MMS | Master Mission Schedule |
| MMS | Mission Management Subsystem |
| MMS | Mission Management System |
| MMS | Multi-Mission Scheduler |
| MMS | Mission Management System (EMOS component) |
| MNG | Multiple-image Network Graphics (Proposed addition to PNG standard for storing and transmitting multiple image animations and composite frames) |
| MO | Mission of Opportunity |
| MO&DA | Mission Operations and Data Analysis |
| MO&DSD | Mission Operations and Data Systems Directorate (GSFC Code 500) |
| MOA | Memorandum Of Agreement |
| MOA | Meteorology, Ozone and Aerosol |
| MOBY | Marine Optical Buoy |
| MOC | Mission Operations Center |
| MOC | Mission Operations Control |
| MOC | Management and Operations Components |
| MOCD | Magneto-Optics Compact Disk (Write Many CD) |
| MOCD | Mission Operations Concept Document |
| MOCE | Marine Optical Characterization Experiment |
| MOCEAN | MODIS Ocean |
| MODAPS | MODIS Adaptive Processing System |
| MODIS | MODerate resolution Imaging Spectroradiometer |
| MODIS-N | MODerate resolution Imaging Spectroradiometer - Nadir |
| MODIS-T | MODerate resolution Imaging Spectroradiometer - Tilt |
| MODLAND | MODIS Land |
| MODNET | MO&DSD Operational Development Network |
| MODS | Mission Operations and Data Systems |
| MODTRAN | Moderate Resolution Transmittance |
| MOE | Maneuver Operations Exercise |
| MOE | Mission Operations Exercise |
| MOI | Memorandum Of Information |
| MOJO | Message Oriented Java Objects |
| MOJO | Message Oriented JEST Objects |
| MOL | Manned Orbital Laboratory |
| MOLAP | Multidimensional OLAP |
| MOM | Mission Operations Manager |
| MOM | Message-Oriented Middleware |
| MOMP | Mission Operations Management Plan |
| MOO | Maintain and Operation |
| MOP | Mission Operations Plan |
| MOP | Meteosat Operational Programme |
| MOPITT | Measurements Of Pollution In The Troposphere |
| MOPR | Mission Operations Planning Review |
| MOR | Mission Operations Review |
| MOR | Mission Operations Room |
| MORD | Mission Operations Requirements Document |
| MOS | Marine Observation Satellite |
| MOS | Metal Oxide Silicon |
| MOS-1a,b | Marine Observation Satellite (Japan) |
| MOSA | Mission Operations Support Area |
| MOSDD | Mission Operations and Systems Development Division |
| MOSFET | Metal Oxide Silicon Field Effect Transistor |
| MOSP | Mission Operations Support Plan |
| MOSPF | Multicast Open Shortest Path First |
| MOSR | Mission Operations Status Review |
| MOSS | Mime Object Security Standard |
| MOSS | Mission Operations Science System |
| MOST | Mission Operations Support Test |
| MOTS | Modified-Off-The-Shelf |
| MOU | Memorandum of Understanding |
| MOWG | Mission Operations Working Group |
| MOZART | Model for Ozone And Related Chemical Tracers |
| MP | Mission Planning |
| MP | Message Passing |
| MP | Massively Parallel |
| MPA | Mission Planning Analyst |
| MPD | Magnetosphere Particules (Detector) |
| MPDU | Multiplexed Protocol Data Unit |
| MPDU | Multiplexing Daa Unit |
| MPE | Max-Planck Institute for Extraterrestrial Physics |
| MPEG | Moving Pictures Expert Group (International Video Compression Standard) |
| MPF | Managed Process Framework |
| MPG | Max Planck Gesellschaft (Max Planck Society) |
| MPGT | Mission Planning Graphics Tool |
| MPI | Max Planck Institute |
| MPP | Massively Parallel Processor |
| MPR | Monthly Progress Review |
| MPR | Mission Planning Review |
| MPS | Multimode Portable Simulator |
| MPS | Master Power Supply |
| MPS | Mission Planning System (ASF) |
| MPT | Mission Planning Terminal |
| MPU | Metadata Populating Utility (LaRC) |
| MR | Malfunction Report |
| MR | Microwave Radiometer |
| MR | Moon Rise |
| MR | Mission Rehearsal |
| MRB | Material Review Board |
| MRC | Master Reference Cube |
| MRDB | Mission Requirements Database |
| MRE | Mission Readiness Exercise |
| MRE-1 | Mono-Propellant Rocket Engine |
| MRIR | Medium Resolution Infrared Radiometer (Nimbus) |
| MRLC | Multi-Resolution Land Characteristics Consortium |
| MRM | Mission Readiness Manager |
| MRO | Memory Read Out |
| MRR | Manufacturing Readiness Review |
| MRR | Mission Requirement Request |
| MRS | Maintenance Reporting System |
| MRS | Malfunction/Failure Reports |
| MRS | Mission Requirements Specification |
| MRS | Multi Release Support |
| MRT | Mission Readiness Test |
| MRT | Mission Readiness Team |
| MRTP | Mission Readiness Test Plan |
| MRTR | Mission Readiness Test Requirements |
| MRTT | Mission Readiness Test Team |
| MS | Moon Set |
| MS | Mass Storage |
| MS PCMB | Mission Systems PCMB |
| MSB | Most Significant Bit |
| MSC | Multimedia Supper Corridor |
| MSCD | Mirror Scan Correction Data |
| MSCIF | Mechanical Spacecraft Interface |
| MSE | Maintenance Support Equipment |
| MSFC | Marshall Space Flight Center |
| MSG | Meteosat Second Generation |
| MSH | Most Significant Half |
| MSL | Mean Sea Level |
| MSO | Manufacturing Shop Order |
| MSO | Mission Systems Office |
| MSOCC | Multiple Satellite Operations Control Center |
| MSPO | Mission Systems Program Office |
| MSPPS | Microwave Surface and Precipitation Products |
| MSPSP | Mission System Prelaunch Safety Package |
| MSR | Management Status Report [Flights Projects Directorate] |
| MSR | Monthly Status Review |
| MSR | Mission Status Review |
| MSR | Microwave Scanning Radiometer |
| MSR | Mission Support Room |
| MSRD | Mission Specific Requirements Document |
| MSRM | Mass Storage Reference Model |
| MSS | Multi-Spectral Scanner (Landsat) |
| MSS | Mass Storage System |
| MSS | Management Subsystem |
| MSS | Master Summary Schedule |
| MSS | Message Switching System |
| MSS | Management Services Subsystem |
| MSS | Mobile Satellite Service |
| MSS | Mission Management System |
| MSSHW | MSS Hardware CI |
| MST | MODIS Science Team |
| MSU | Mass Storage Unit |
| MSU | Microwave Sounding Unit |
| MSW | Most Significant Word |
| MSX | Midcourse Space Experiment |
| MT | Magnetic Torquer |
| MT | Mission Test |
| MTA | Message Transfer Agent |
| MTA | Magnetic Torque Assembly |
| MTBCM | Mean Time Between Corrective Maintenance |
| MTBF | Mean Time Between Failure |
| MTBI | Mean Time Between Interrupts |
| MTBM | Mean Time Between Maintenance |
| MTBPM | Mean Time Between Preventive Maintenance |
| MTF | Modulation Transfer Function |
| MTI | Multispectral Thermal Imager |
| MTL | Message Transfer Layer |
| MTMGW | Machine-To-Machine Gateway |
| MTPE | Mission To Planet Earth |
| MTR | Magnetic Torque Rod |
| MTS | Microwave Temperature Sounder |
| MTS | Mode Transition Sequence |
| MTS | Meteoroid Technology Satellite (NASA) |
| MTTR | Mean Time To Repair |
| MTTR | Mean Time To Recover |
| MTTRes | Mean Time To Restore |
| MTTRS | Mean Time To Restore Service |
| MTU | Message Transfer Unit |
| MTVS | MODIS Test and Validation System |
| MU | Microwave Unit |
| MUA | Metadata Update Acknowledgement |
| MUA | Mail User Agent |
| MUC | Modified UNESCO Classification system |
| MUI | Management User Interface |
| MUIS | Multi-Mission User Interface System |
| Multi-BERT | Multiple Bit Error Rate Tester |
| MUR | Metadata Update Request |
| MUT | Metadata Update Tool |
| MVI | Modified Vegetation Index |
| MVI | MODIS Vegetation Index |
| MWA | Momentum Wheel Assembly (AMSR-E) |
| MWIR | Medium-Wavelength Infrared |
| MWP | Microwave Water Path |
| MWRI | Medium-Wavelength Infrared |
| N | Back to top |
| N&MS | Network and Mission Services |
| N/B | Narrowband |
| NAAQS | National Ambient Air Quality Standards |
| NAC | National Agency Check |
| NACC | Network Automated Console Controller |
| NACSIM | National Communications Security Instruction Memorandum |
| NAD | Nadir Aperture Door |
| NADW | North Atlantic Deep Water |
| NAIC | National Astronomy and Ionosphere Center (Arecibo, Puerto Rico) |
| NALC | North American Land Characterization |
| NAM | NASA Advisory Manager |
| NAO | North Atlantic Oscillation |
| NAO | National Astronomical Observatory (Japan) |
| NAP | Network Access Point |
| NAPP | National Aerial Photography Program |
| NARA | National Archive and Records Administration |
| NARSTO | North American Research Strategy for Troposheric Ozone |
| NAS | National Academy of Sciences |
| NAS | Numerical Aerospace Simulation |
| NAS | Network Attached Storage |
| NAS | NASA Advisory Council |
| NASA | National Aeronautics and Space Administration |
| NASCOM | NASA Communications Network |
| NASCOM II | NASCOM Augmentation |
| NASCOP | NASA Communications Operating Procedures |
| NASDA | National Space Development Agency (Japan) |
| NASIRC | NASA Automated Systems Incident Response Capabilities |
| NASTRAN | NASA Structural Analysis (Program) |
| NAUG | NASCOM Augmentation |
| NAV | Navigation |
| NAWQA | National Water Quality Assessment |
| NB | Narrowband |
| NB | Noisy Bus |
| NBDT | Narrowband Downlink Transmitter |
| NBIOME | Northern Biosphere Observation and Modeling Experiment |
| NBIS | Northern Biosphere Information System |
| NBR | Navigation Base Reference |
| NBS | National Bureau of Standards |
| NBS | National Biological Service |
| NBTX | Narrowband Transmitter |
| NC | Non-Complex |
| NC | Network Computer |
| NCA | Network Computing Architecture |
| NCAR | National Center for Atmospheric Research |
| NCC | Network Communication Center |
| NCC | Network Control Center |
| NCCD | NCC Directive |
| NCCDS | NCC Data System |
| NCDC | National Climatic Data Center (NOAA) |
| NCDS | NASA Climate Data System |
| NCEP | National Center for Environmental Prediction (NOAA) |
| NCEP AWC | National Center for Environmental Prediction Air Weather Center |
| NCF | NSSDC Computer Facility |
| NCGIA | National Center for Geographic Information and Analysis |
| NCIA | Center for Information and Analysis |
| NCIS | Nadir Climatic Interferometer/Spectrometer |
| NCPS | Network Command Processing System |
| NCR | Non-Conformance Report |
| NCRA | Nonconformance Reporting and Corrective Action System |
| NCS | Nutation Control System |
| NCS | Network Computing System |
| NCSA | National Center for Supercomputer Applications |
| NCSA | National Computer Security Association |
| NCSA | National Center for Supercomputer Applications |
| NCSC | National Computer Security Center |
| NCSL | National Computer Systems Laboratory |
| NCSNET | NASCOM Custom Subnetwork |
| ND | Network Directorate |
| ND | Networks Division |
| nd:YAG | Neodymium: Yttrium-Aluminum-Garnet |
| NDA | Non Disclosure Agreement |
| NDBC | National Data Buoy Center |
| NDI | Non-Developmental Items |
| NDN | National Data Node |
| NDP | Numerical Data Package |
| NDPR | NASA Defense Purchase Request |
| NDS | Non-Developmental Software |
| NDS | Novell Directory Service |
| NDSC | Network for the Detention of Stratospheric Change |
| NDVI | Normalized Difference Vegetation Index |
| NEA | Non-Explosive Actuators |
| NEA | Noise Equivalent Angle |
| NEB | Non-Essential Bus |
| NEC | North Equator Crossing |
| NEC | National Electric Code |
| NEDRES | National Environmental Data Referral System |
| NEG | Numerical Experimentation Group (of CLIVAR) |
| NEOC | Non-Essential Over-Current |
| NEPA | National Environmental Policy Act |
| NEPP | NASA Electronic Parts and Packaging |
| NERC | National Environmental Research Center |
| NERP | National Environmental Research Park |
| NESDD | NOAA Earth Science Data Directory |
| NESDIS | National Environmental Satellite, Data, and Information Service (NOAA) |
| NESR | Noise Equivalent Source Radiance |
| NESR | Noise Equivalent Spectral Radiance |
| NET | No Earlier Than |
| netCDF | Network Common Data Format |
| NetCDF | Non-HDF Formats |
| NEVADA | Net Energy Verification And Determination Analyzer |
| NewDISS | New Data and Information Systems and Services |
| NEWS | NOAA’s Earth Watch Service |
| NEXRAD | Next Generation Weather Radar |
| NF | Noise Figure |
| NFE | NCC Front End |
| NFOV | Narrow Field-Of-View |
| NFPA | National Fire Protection Association |
| NFS | Network File System |
| NG | Northrop Grumman |
| NGDC | National Geophysical Data Center (NOAA) |
| NGO | Non-Governmental Organization |
| NGST | Next Generation Space Telescope |
| NGST | Northrop Grumman Space Technology |
| NGT | NASA Ground Terminal |
| NH | Northern Hemisphere |
| NHA | Next Higher Assembly |
| NHAP | National High Altitude Photography |
| NHB | NASA Handbook |
| NHC | National Hurricane Center |
| NI | NASA Internet |
| NI DAQ | National Instruments Data Acquisition |
| NIA | Network Integration and Analysis |
| NIAC | NASA Institute for Advanced Concepts |
| NIC | Network Interface Card |
| NIC | National Ice Center |
| NIC | NASA Information Center |
| NICMOS | Near Infrared Camera and Multi-Object Spectrometer |
| NID | Network Interface Device |
| NIES | National Institute of Environmental Science (Japan) |
| NII | National Information Infrastructure |
| NIIT | National Information Infrastructure Testbed |
| NIMA | National Imagery and Mapping Agency |
| NIMBUS | NASA Meteorological Satellites (1 through 7) |
| NIPC | National Infrastructure Protection Center |
| NIPR | National Institute for Polar Research (Japan) |
| NIR | Near Infrared |
| NIS | Network Information Service |
| NISC | NISN Information Support Center |
| NISDDT | NASCOM Interface Standards for Digital Data Transmission |
| NISE | Near Real-Time SSM/I EASE-Grid Daily Global Ice Concentration and Snow Extent |
| NISN | NASA Integrated Services Network |
| NISS | NASA Institutional Support Systems |
| NIST | National Institute of Standards and Technology |
| NIU | Network Interface Unit |
| NIVR | Nederlands Instituut Voor Vliegtuigontwikkeling en Ruimtevaart (Netherlands Agency for Aerospace Programmes) |
| NIVR | Netherlands Space Agency |
| NIX | NASA Image Exchange |
| NLAPS | National Landsat Archive Production System |
| NLDC | NASA Landsat Data Collection |
| NLDN | National Lightning Detection Network |
| NLM | NASA Launch Manager |
| NLSP | Netware Link Services Protocol |
| NM | Network Management |
| NMA | Network Management Application |
| NMC | Network Management Center |
| NMC | National Meteorological Center (NOAA) |
| NMCC | NASCOM Management Control Center |
| NMCI | Network Management Configuration Item |
| NMD | NASA Master Directory |
| NMF | Network Management Facility |
| NMF | Network Management Forum |
| NMFS | National Marine Fisheries Service |
| NMHC | Non-Methane Hydrocarbons |
| NMI | NASA Management Instruction |
| NMOS | Network and Mission Operations Support (NASA Program) |
| NMOS | NASA Management and Operations Support |
| NMP | New Millennium Program |
| NMS | Neutral Mass Spectrometer |
| NMS | Network Management System |
| NMS | Network Management Subsystem (ECOM) |
| NMSP | Networks and Mission Services Project |
| NNGS | NASCOM Network Gateway System |
| NNI | Network to Network Interface |
| NNM | Network Node Manager |
| NNM | Hp Open View Network Node Manager |
| NNTP | Network News Transfer Protocol |
| NOAA | National Oceanic and Atmospheric Administration |
| NOAA SAA | NOAA Satellite Active Archive |
| NOARL | Naval Oceanographic and Atmospheric Research Lab |
| NOBL | New Outer Blanket Layers |
| NOC | Network Operations Center |
| NOCC | Network Operations Control Center (DSN) |
| NODC | National Oceanographic Data Center (NOAA) |
| NODS | NASA Ocean Data System |
| NOE | Network Operations Exercises |
| NOLAN | NASCOM Operational Local Area Network |
| NOM | Network Operations Manager |
| NOMC | Network Operations Management Center |
| NOP | No Operation |
| NOPEX | Northern Hemisphere Climate-Processes Land-Surface Experiment |
| NOPS | Nimbus Ozone Processing System |
| NOR | Notice Of Revision |
| NORAD | North American Aerospace Defense Command |
| NORDA | Naval Ocean Research and Development Activity |
| NOS | Network Operating System |
| NOSE | Nominal Orbit Spatial Extent |
| NOSIE | Nodc Ocean Science Information Exchange |
| NOSP | Networks Operation Support Plan |
| NOSP | Network Operations Support Plan |
| NOSS | National Oceanic Satellite System |
| NPAS | Network Planning and Analysis System |
| NPCS | Narrowband PCS |
| NPG | Network Protocol Gateway |
| NPG | NASA Policy and Guidelines |
| NPG | NASA Procedures and Guidelines |
| NPOESS | National Polar-orbiting Operational Environmental Satellite System |
| NPOP-1 | NASA Polar Orbiting Platform (One) |
| NPP | Net Primary Productivity |
| NPP | NPOESS Preparatory Project |
| NPPA | California Native Plant Protection Act |
| NPRD | Nonelectronic Parts Reliability Data |
| NPSNET | NASCOM Packet Switched Subnetwork |
| NQA | National Quality Assurance |
| NRA | NASA Research Announcement |
| NRC | National Research Council |
| NRCA | Nonconformance Reporting and Corrective Action |
| NRCS | Natural Resource Conservation Service |
| NRCT | National Research Council of Thailand |
| NRDN | NOAA Radar Data Network |
| NREN | National Research and Education Network |
| NRL | Naval Research Laboratory |
| NRLM | National Research Laboratory of Metrology (Japan) |
| NRN | National Research Network |
| NRP | National Resource Protection |
| NRSC | National Remote Sensing Centre (UK) |
| NRT | Near Real-Time |
| NRT | Network Readiness Test |
| NRTP | Near Real-Time Processor |
| NRTS | Near Real-Time System |
| NRZ | Non Return to Zero |
| NRZ-L | Non Return to Zero-Level |
| NRZ-M | Non Return to Zero, Mark |
| NRZI | Non-Return to Zero Invert on ones |
| NSAP | Network Service Access Point |
| NSAPI | Netscape Server API |
| NSAT | Network Security Assessment Team |
| NSBF | National Scientific Balloon Facility |
| NSC | Network Support Committee |
| NSCAT | NASA Scatterometer |
| NSDD | National Security Decision Directives |
| NSDI | National Spatial Data Infrastructure |
| NSDS | NASA Software Documentation Standard |
| NSF | National Science Foundation |
| NSFNet | NSF Network |
| NSG | Network Services Group |
| NSGIC | National States Geographic Information Council |
| NSGW | NASCOM Service Gateway |
| NSI | National Science Institute |
| NSI | NASA Science Internet |
| NSIDC | National Snow and Ice Data Center |
| NSIP | NASA Student Involvement Program |
| NSIPO | NASA Science Internet Project Office |
| NSM | Network Support Manager |
| NSM | Network Status Monitor |
| NSN | NASA Science Network |
| NSP | NASA Support Plan |
| NSP | Network Service Provider |
| NSPAR | Nonstandard Part Approval Request |
| NSpC | National Space Council |
| NSPD | National Space Policy Directive |
| NSPL | Non-Standard Parts List |
| NSR | NISN Service Request |
| NSRS | Natural Environment Research Council (BNSC) |
| NSSDC | National Space Science Data Center |
| NSSL | National Strong Storm Laboratory |
| NSTC | National Space and Technology Council |
| NSTR | NASA Standard Tape Recorder |
| NSTS | National Space Transportation System |
| NT | Not Tested |
| NT | Network Transport |
| NTE | Not To Exceed |
| NTIA | National Telecommunications and Information Administration |
| NTIC | National Technical Information Center |
| NTISS | National Telecommunications and Information Systems Security Policy |
| NTP | Network Transport Protocol |
| NTP | Network Time Protocol |
| NTR | New Technology Report |
| NTSC | National Television Standards Committee |
| NTT | Nippon Telephone and Telegraph |
| NTTF | NASA Test and Training Facility |
| NU | No Unit (Or Unitless) |
| NUMA | Non-Uniform Memory Access |
| NUS | No Upper Stage |
| NUWIG | NCC User Working Interface Group |
| NV | Not Verified |
| NVAP | NASA Water Vapor Project |
| NVM | Non-Volatile Memory |
| NVR | Non-Volatile Residue |
| NVRAM | Non-Volatile RAM |
| NWCI | Networking Configuration Item |
| NWP | Numerical Weather Prediction |
| NWS | National Weather Service (NOAA) |
| NWS-HRL | NWS - Hydrologic Research Laboratory |
| NWS-RFC | NWS - Regional Forecast Center |
| NWS-RFO | NWS - River Forecast Office |
| NYC | Not Yet Complete |
| O | Back to top |
| O&C | Operations and Checkout |
| O&M | Operations and Maintenance |
| O-Team | Operability Team |
| O/A | Orbit and Altitude |
| OA | Operations Agreement |
| OA | Off-Line Analysis Process |
| OA | Orbital Activation |
| OA | Optical Assembly |
| OA | Operational Attitude |
| OA | Orbital Analyst |
| OA SCS | Orbital Activation Stored Command Sequences |
| OA-MSCIF | Optical Assembly MSCIF |
| OA-TH | Optical Assembly Thermal Hardware |
| OAC | Optical Alignment Cube |
| OAP | Orbital Activation Plan |
| OAPR | Orbital Activation Plan Review |
| OASIS | Operations And Science Instrument Support |
| OASIS | Office Automation Systems Improvement Standards |
| OASIS | Organization for the Advancement of Structured Information Standards |
| OASIS-CC | OASIS - Command and Control |
| OASIS-IS | OASIS - Interface System |
| OASIS-PS | OASIS - Planning and Scheduling |
| OASM | Operational Analysis Support Model |
| OAT | Operational Algorithm Teams |
| OBC | On-Board Computer |
| OBC | On-Board Calibrator |
| OBDC | On Board Doppler Computation |
| OBFM | On Board Fault Management |
| OBM | Orbital Balancing Mechanism |
| OBP | On-Board Processor |
| OBRS | On-Board Radiation Source |
| OC | Operational Capability |
| OC | Operations Controller |
| OC | Optical Carrier |
| OCC | Operations Control Center |
| OCC/MPS | Operations Control Center/Mission Planning System |
| OCD | Operations Concept Document |
| OCF | Operational Control Field |
| OCG | Ocean Catalog Group (NASA) |
| OCH | Operations Coordination Handbook |
| OCI | Ocean Color Imager |
| OCI | Oracle Call Interface |
| OCL | Open Client Library |
| OCM | Ocean Color Mission |
| OCMIP | Ocean Carbon-Cycle Model Intercomparison Project |
| OCR | Optical Character Recognition |
| OCR | Operations Control Room |
| OCR/ICR | Optical Character Recognition/Intelligent Character Recognition |
| OCS | Operator Control Subsystem |
| OCT | Ocean Color and Temperature |
| OCTS | Ocean Color and Temperature Scanner (ADEOS) |
| OD | Outside Diameter |
| OD | Orbit Determination |
| OD | Operational Day |
| ODB | Operational Database |
| ODBC | Open Database Connectivity |
| ODBMS | Object Oriented Data Management System |
|
| ODE | Orientation Drive Electronics |
| ODF | Operational Data File |
| ODFRM | On-Demand Form Request Manager (Cls) |
| ODIN | Outsourcing Desktop Initiative for NASA |
| ODIS | Office of Data Information Systems |
| ODIS | Operations Data and Information Systems |
| ODL | Object Description Language |
| ODL | Object Definition Language |
|
| ODM | Operations Data Message |
| ODMA | Open Document Management API |
| ODMG | Open Database Management Group |
| ODMS | Object Data Management System |
| ODP | Open Distributed Processing |
| ODP | On-Board Data Processor |
| ODP | Ozone Depletion Potential |
| ODPR | On-Demand Production Request |
| ODPRM | On-Demand Production Request Manager (Pls) |
| ODPS | OMI Dutch Processing System |
| ODR | Optical Data Recorder (ADEOS II) |
| ODS | One Day Schedule |
| ODS | Operational Data Store |
| ODT | Operational Data Tapes |
| ODT | One Day Test |
| ODUS | Ozone Dynamics Ultraviolet Spectrometer |
| OE | Operations Engineering |
| OEC | Operations Engineering Center |
| OEM | Original Equipment Manufacturer |
| OEM | Operations Engineering Manager |
| OES | Object Encapsulation Software |
| OES | Office of Earth Science |
| OFS | Orbiter Filght Simulator |
| OGC | Open Gis Consortium |
| OGCM | Ocean General Circulation Model |
| OGO | Orbiting Geophysical Observatory |
| OH | Operations Handbook |
| OHS | Order Handling System |
| OI | Operating Instructions |
| OI | Operations Integrator |
| OI&T | Operations Integration and Testing |
| OI(1) | Singly Ionized Oxygen Emission Line |
| OICD | Operational Interface Control Document |
| OICD | Orbit Injection and Constellation Deployment (Mode) |
| OIL | Observational Instrument Laboratory |
| OIM | Open Information Model |
| OIP | Operations Interface Procedure |
| OIVP | On-Orbit Initialization and Verification Plan |
| OJT | On-the-Job Training |
| OLAP | On-Line Analytical Processing |
| OLE | Object Linking, Tools |
| OLE | Object Linking and Embedding |
| OLME | Ozone Layer Monitoring Experiment |
| OLMSA | Office of Life Microgravity Sciences and Applications |
| OLR | Outgoing Longwave Radiation |
| OLS | Optical Line Scanner |
| OLS | Orbital Launch Services |
| OLS | Operational Linescan System |
| OLS | Optical Linescan System |
| OLTP | On-Line Transaction Processing |
| OM | Operations Manager |
| OM | Operations Management |
| OMA | Object Management Architecture |
| OMA | Oblique Mercator, Type A |
| OMB | Oblique Mercator, Type B |
| OMB | Office of Management and Budget |
| OMCF | Orbiter Maintenance and Checkout Facility |
| OMD | Operations Management Data |
| OMDSIM | Operations Management Data Simulator |
| OMF | Object Management Framework |
| OMF | Operations Management Function |
| OMG | Object Management Group |
| OMI | Ozone Monitoring Instrument |
| OMIDAPS | OMI Data Processing System |
| OMIE | OMI - EOS |
| OMIS | Ozone Monitoring Instrument System |
| OMIS | Optical Multichannel Imaging Sensor (NPOESS) |
| OMPS | Ozone Mapper/Profiler Suite |
| OMPWG | ASTER Operation and Mission Planning Working Group |
| OMS | Observation from the Middle Stratosphere |
| OMS | Orbital Maneuvering System |
| OMT | Object Modeling Technique |
| OMV | Orbital Maneuvering Vehicle |
| ONC | Operational Navigational Charts |
| ONE | Open Network Environment (Netscape) |
| ONRTS | OMI Near Real-Time System |
| ONU | Optical Network Unit |
| ONVS | Ozone Near-real-time and Very-fast-delivery System |
| OO | Object Oriented |
| OOA | Object-Oriented Analysis |
| OOA | Object Analyst |
| OOD | Object-Oriented Design |
| OOD | Operational Orbit Determination |
| OODBMS | Object-Oriented Database Management System |
| OODCE | Object-Oriented Distributed Computing Environment |
| OOL | Out Of Limits |
| OOL | Object Oriented Language |
| OOOM | On-Orbit Operations Manual |
| OOOS | Object-Oriented Operating System |
| OOP | Object-Oriented Programming |
| OOPL | Object-Oriented Programming Language |
| OOPS | Object-Oriented Programming and Systems |
| OORDB | Object-Oriented Relational Data Base |
| OOT | Out Of Tolerance |
| OP | Over-Pressure fault |
| OPB | Operations Baseline |
| OPD | Operations Document |
| OPD | Operation Procedure Document |
| OPF | Orbiter Processing Facility |
| OPF | Operational Parameter File |
| OpLAN | Operational Local Area Network |
|
| OPM | Operational Message |
| OPPM | Outside the Principal Period of Maintenance |
| OPR | On-Demand Production Request |
| OPS | Onboard Payload Support Operations |
| OPS | Open Profiling Standard |
| OPS | On-Board Payload Support |
| OPS | Optical Sensor |
| OPSEC | Open Platform for Secure Enterprise Connectivity |
| OPSIM | Program for Operations Simulator and for the CCDM Model |
| OPT | Ozone Processing Team |
| OQL | Object Query Language |
| OR | Operations Requirements |
| ORACLE | On-Line Inquiry And Report Generator |
| ORB | Object Request Broker |
| ORBSIM | Orbit Simulation (a part of SDP Toolkit) |
| ORDBMS | Object Rational Database Management System |
| ORE | Operations Readiness Exercise |
| ORF | Orbital Reference Frame |
| ORNL | Oak Ridge National Laboratory (DAAC) |
| ORPA | Operations Readiness and Performance Assurance |
| ORPC | Object Remote Procedure Call |
| ORR | Operations Readiness Review |
| ORT | Operations Readiness Test |
| ORT | Operations Readiness Training |
| ORU | Operational Replacement Unit |
| OS | Object Services |
| OSAB | OMI Science Advisory Board |
| OSC | Orbital Sciences Corporation |
| OSC | Office of Space Communications |
| OSD | Open Software Description |
| OSDPD | Office of Space Data Processing and Distribution (NOAA) |
| OSF | Open Software Foundation |
| OSF | Open Systems Foundation |
| OSF | Office of Space Flight (NASA HQ) |
| OSF | Observation Schedule File |
| OSHA | Occupational Safety and Health Administration |
| OSI | Open Systems Interconnection |
| OSI-RM | OSI Reference Model |
| OSIPS | OMI Science Investigator-led Processing System |
| OSM | Open Storage Manager |
| OSMA | Office of Safety and Mission Assurance |
| OSO | Office of Space Operations |
| OSP | Operations Support Product |
| OSP/A | Orbiting Satellite Project/Application |
| OSP/S | Orbiting Satellite Project/Science |
| OSPF | Open Shortest Path First (Routing Protocol) |
| OSS | Office of Space Station |
| OSS | Operational Support Software |
| OSSA | Office of Space Science and Applications |
| OSSE | Observing System Simulation Experiments |
| OSSE | Oriented Scintillation Spectrometer Experiment |
| OST | Operations Support Team |
| OSTDS | Office of Space Tracking and Data Systems |
| OSTP | Office of Science and Technology Policy |
| OT | Open Technology |
| OT | Over-Temperature fault |
| OT&E | Operational Test and Evaluation |
| OTA | Office of Technology Assessment |
| OTAE | Other Technical Assets Employed |
| OTD | Optical Transient Detector |
| OTJ | On The Job |
| OTMM | Observatory Thermal Math Model |
| OTP | Open Trading Protocol |
| OTS | Off-The-Shelf |
| OTS | Object Transaction Service (Corba) |
| OTS | Optical Test Source |
| OTTER | Oregon Transect Terrestrial Ecosystem Research |
| OTV | Orbital Transfer Vehicle |
| OU | Organizational Unit |
| OV | Over Voltage |
| OV | Open View |
| OV | Orbit Verification |
| OVW | Hp Open View Windows |
| OWG | Operations Working Group |
| OZON-MIR | Ozone trace gas and aerosol monitor on Mir |
| P | Back to top |
| P P/B | Priority Playback |
| P&CS | Planning and Control System |
| P&S | Planning and Scheduling |
| P-NNI | Private Network to Network Interface |
| p-p | Peak-to-Peak |
| P/S | Planning/Scheduling |
| P/T | Pending Test |
| PA | Payload Accommodations |
| PA | Performance Assurance |
| PA | Product Assurance |
| PA | Power Amplifier |
| PA | Performance Analyst |
| PA | Prototype Algorithm |
| PAA | Payload Accommodation Assembly |
| PAA | Program Associate Administrator |
| PAAS | Platform Archive and Analysis System |
| PABSI | Profiling A-Band Spectrometer/Visible Imager |
| PAC | Privilege Attribute Certificate |
| PACC | Program Analysis and Control Contract |
| PACOR | Packet Processor |
| PACS | Polar Acquisition and Command System |
| PACS | Pan American Climate Study (Goals) |
| PAD | Precision Attitude Determination |
| PAF | Processing and Archiving Facility (ESA) |
| PAF | Payload Attach Fitting |
| PAF | Payload Attached Fixture |
| PAGES | Past Global Changes (IGBP) |
| PAIP | Performance Assurance Implementation Plan |
| PAL | Parts Accumulation List |
| PAL | Phases Alternate Line |
| PALS | Procedure Automation Language Shell |
| PAM | Permanent Archive Manager |
| PAM | Performance Assurance Manager |
| PAM | Payload Assist Module |
| PAM-D | Payload Assist Module-Delta |
| PAMM | Permanent Archive and Media Management |
| PAN | Production Acceptance Notification |
| PAO | Performance Analyst Office |
| PAPL | Project Approved Parts List |
| PAR | Performance Assurance Requirements |
| PAR | Platform Acceptance Review |
| PAR | Photosynthetically Active/Available Radiation |
| PARABOLA | Portable Apparatus for Rapid Acquisition of Bidirectional Observations of the Land and Atmosphere |
| PARCA | Program for Arctic Regional Climate Assessment |
| PARS | Playback Anomaly Recovery System |
| PAS | Platform Analysis Software |
| PAS | Platform Analysis System |
| PAS | Planning And Scheduling |
| PAS | Planning And Scheduling Subsystem |
| PB4 | Parallel Grouped Binary Millisecond/Microsecond Time Code |
| PB5 | Parallel Grouped Binary Time Code 5 |
| PBAT | Power Module Battery |
| PBAT | Power Equipment Module Battery |
| PBC | Performance Based Contracting |
| PBI | Person Based Interface (Non Automated) |
| PBIO | Processor Backplane I/O |
| PBL | Product Baseline |
| PBL | Planetary Boundary Layer |
| PC | Printed Circuit |
| PC | Photo Conductive |
| PC | Process Control |
| PC | Power Controller |
| PC | Performance Criteria |
| PC | Parameter Control |
| PCA | Program Control Analyst |
| PCA | Physical Configuration Audit |
| PCA | Product Configuration Audit |
| PCA | Program Committment Agreement |
| PCAM | Program Complexity Analysis Methodology |
| PCAR | Platform Core Activity Request |
| PCB | Programmable Circuit Breaker |
| PCB | Program Control Board |
| PCB | Parts Control Board |
| PCB | Project Control Board |
| PCC | Platform Control Center |
| PCC | Payload Checkout Cells |
| PCD | Payload Correction Data |
| PCD | Periodic Convolutional Deinterleaver |
| PCDS | Pilot Climate Data System (Became NCDS) |
| PCDS | PCD Processing Subsystem |
| PCE | Power Control Electronics |
| PCF | Process Control File |
| PCFG | Program Configuration File (Management Agent) |
| PCHS | Program Control Hierarchy System |
| PCI | Peripheral Component Interface |
| PCI | Peripheral Component Interconnect |
| PCI | Product Configuration Identification |
| PCI | Periodic Convolutional Interleaver |
| PCI | Personal Computer Interface |
| PCL | Planning Class Libraries |
| PCM | Pulse Code Modulated |
| PCM | Physical Configuration Management |
| PCMB | Project Configuration Management Board |
| PCMU | Power Control Monitoring Unit |
| PCMU | Propulsion Control and Monitor Unit |
| PCN | Personal Communications Network |
| PCO | Procedure Change Order |
| PCON | Proof of Concept |
| PCP | Platform Controls Processor |
| PCP | Payload Control Processor |
| PCR | Peak Cell Rate |
| PCR | Procedure Change Request |
| PCR | Product Change Request |
| PCR | PMS Compliance Review |
| PCS | Pointing Control System |
| PCS | Pre-defined Command Sequence |
| PCS | Predefined Command Scripts |
| PCS | Planning and Control System |
| PCS | Predefined Command Script |
| PCS | Predefined Command Sequences |
| PCS | Personal Communications Services |
| PCSF | Project Completion Statistics Form |
| PCT | Preliminary Console Training |
| PCU | Power Control Unit |
| PDA | Power Distribution Assembly |
| PDA | Preliminary Design Audit |
| PDAS | Predicted Data Availability Schedules |
| PDB | Project Database |
| PDB | Program Database |
| PDBS | Parallel Database System |
| PDD | Payload Definition Document |
| PDF | Programmable Data Formatter |
| PDF | Payload Data Formatter |
| PDH | Production Data Handling |
| PDHF | Production Data Handling Function |
| PDI | Professional Development Initiative |
| PDL | Program Design Language |
| PDM | Propellant Distribution Module |
| PDMO | Product Data Management Office |
| PDMP | Program Data Management Plan |
| PDMP | Project Data Management Plan |
| PDP | Program Development Plan |
| PDP | Production Data Processing |
| PDPS | Planning and Data Processing System |
| PDPS | Planning and Data Processing Subsystem |
| PDPS | Planning and Data Production System |
| PDPS | Product Data Processing Subsystem |
| PDQ | Panel on Data Quality |
| PDR | Preliminary Design Review |
| PDR | Product Delivery Record |
| PDR-A | Preliminary Design Review Release-A |
| PDRD | Product Delivery Record Discrepancy |
| PDS | Production Data Set |
| PDS | Production Data System |
| PDS | Production Data Specialist |
| PDT | Procurement Development Team |
| PDTT | Product Development Tracking Tool |
| PDU | Protocol Data Unit |
| PDU | Power Distribution Unit |
| PDW | Preliminary Design Walk-Through |
| PEATE | Product Evaluation and Analysis Tool Element |
| PEB | Performance Evaluation Board |
| PECL | Positive Emitter Coupled Logic |
| PEF | Project Estimates Form |
| PEL | Permissible Exposure Limit |
| PEM | Particle Environment Monitor |
| PEM | Pacific Exploratory Mission |
| PEM | Production Efficiency Model |
| PEM | Privacy-Enhanced Mail |
| PEP | Performance Evaluation Plan |
| PER | Pre-Environmental Review |
| PERD | Project Element Requirements Document |
| PERD | Program Elements Requirements Document |
| PERT | Program Evaluation Review Technique |
| PERT | Project Evaluation Review Technique |
| PET | Potential Evapo Transportation |
| PETS | Performance Evaluation and Test System |
| PEU | Processing Electronics Unit (HSB) |
| PeV | Parameter Equals Value |
| PF | Process Framework |
| PF-1 | Poker Flats Ground Station (Alaska) |
|
| PFDP | Preliminary Flight Data Packages |
| PFM | Proto-Flight Model |
| PFPA | Prime Focal Plane Assembly |
| PFU | Proto-Flight Unit |
| PGE | Product Generation Executive (Formerly Product Generation Executable) |
|
| PGGA | Permanent GPS Geodetic Array |
| PGM | Portable Grey Map (Image File Format) |
| PGML | Precision Graphics Markup Language |
| PGN | Polar Ground Network |
| PGP | Pretty Good Privacy |
| PGS | Product Generation Service |
| PGS | Product Generation System (ASTER) |
| PGS | Polar Ground Station |
| PGSTK | Product Generation System Toolkit (Obsolete Name, Replaced By SDPTK) |
| PH | Production History |
| PHD | Polar HDF-EOS Data Imaging and Subsetting |
| PHY | Physical Layer Protocol |
| PI | Principal Investigator |
| PI | Project Instruction |
| PI | Process Instruction |
| PIA | Project Initiation Agreement |
| PIC | Payload Interface Controller |
| PICA | Platform Independent Cryptography API |
| PICASSO-CENA | Pathfinder Instrument gor Cloud and Aerosol Spaceborne Observations (Climatologie Etendue Des Nuages Et Des Aerosols) |
| PICF | Principal Investigator Computing Facility |
| PICS | Procurement and Inventory Control System |
| PICS | Platform for Internet Content Selection |
| PID | Parameter Identifier |
| PID | Prototype International Directory |
| PID | Proportional Integral and Derivative |
| PID | Process Identification Number |
| PIK | Precision Injection Kit |
| PIK | Potsdam Institute for Climate Impact Research |
| PILPS | Project for Intercomparison of Land Surface Parameterization Schemes |
| PIM | Protocol Independent Multicast |
| PIMS | Project Information Management System |
| PIN | Password Identification Number |
| PIN | Process Identification Number |
| PIN | Project Identification Number |
| PIND | Particle Impact Noise Detection |
| PING | Packet Internet Groper |
| PIO | Policy Implementation Office |
| PIP | Project Implementation Plan |
| PIP | Payload Integration Plan |
| PIP | Premium Internet Protocol |
| PIPOR | Programme of International Polar Oceans Research |
| PISCF | Principal Investigator Science Computing Facility |
| PISP | Polar Ice Sheet Program |
| PIT | Product Integration Team |
| PITS | Program Issue Tracking System |
| PITS | Project Issue Tracking System |
| PIU | Power Interface Unit |
| PK | Primary Key |
| PKF | Poker Flats (Alaska) |
| PKI | Public Key Infrastructure |
| PL-DRO | Phase Locked Dielectric Resonance Oscillator |
| PLANG | Planning Subsystem (CI) |
|
| PLB | Payload Bus |
| PLDS | Pilot Land Data System |
| PLDS | Pilot Land Development System |
| PLE | Payload Executive Processor |
| PLF | Payload Fairing |
|
| PLNHW | Planning Hardware [Configuration Item] |
| PLO | Phase Locked Oscillator |
| PLOP | Physical Layer Operations Procedure |
| PLS | Planning Subsystem |
| PM | Preventive Maintenance |
| PM | Propulsion Module |
| PM | Phase Modulation |
| PMA | Project Manager’s Assessment |
| PMA | Platform Management Application |
| PMA | Performance Management Application |
| PMA | Performance Measurement Application |
| PMAD | Power Management And Distribution |
| PMAS | Performance Management Application Service |
| PMB | Performance Measurement Baseline |
| PMC | Pressure-Modulated Cell |
| PMCD | Part Material Control Document |
| PMCU | Propulsion Module Control Unit |
| PMD | Physical Layer Medium Dependent |
| PMD | Physical Layer Medium Protocol |
| PMD | Propulsion Management Device |
| PMD | Polarization Mode Dispersion |
| PMDB | Program Master Database |
| PMDR | Physical Media Delivery Record |
| PMEA | Propulsion Module Electronics Assembly |
| PMF | Product Metadata File |
| PMH | Project Management Handbook |
| PMIR | Pressure Modulated Infrared Radiometer |
| PMIS | Project Management Information System |
| PML | Program Maintenance Library |
| PMMI | PM Microwave Imager |
| PMO | Project Management Office |
| PMP | Project Management Plan |
| PMP | Payload Mounting Plate |
| PMP | Preliminary Mission Plan |
| PMP | Parts, Material, and Processes |
| PMPCB | Parts, Material, and Processes Control Board |
| PMPDR | Physical Media Product Delivery Record |
| PMR | Program Management Review |
| PMR | Project Management Review |
| PMR | Pressure-Modulated Radiometer |
| PMRD | Preliminary Mission Requirements Document |
| PMS | Performance Measurement System |
| PMS | Platform Management System |
| PMSR | Performance Measurement Status Report |
| PMSR | Preliminary Monthly Status Review |
| PMSWG | Platform Management System Working Group |
| PMT | Photo Multiplier Tube |
| PMUDR | Physical Media Unit Delivery Record |
| PN | Pseudorandom Noise |
| PN | Pseudo-Random Number |
| PNG | Portable Network Graphics |
| PNM | Physical Network Management |
| PNNL | Pacific Northwest National Laboratory |
| PNZ | Phytoplankton-Nutrient-Zooplankton |
| PO | Program/Product Order |
| PO | Project Office |
| PO | Purchase Order |
| PO | Polar Oceans |
| PO | Program Office |
| PO.DAAC | Physical Oceanography Distribution Active Archive Center (JPL) |
| POAM | Polar Ozone and Aerosols Mission |
| POC | Point Of Contact |
| POC | Product Order Cancellation |
| POCC | Payload Operations Control Center |
| POCC | Project Operations Control Center |
| POD | Precision Orbit Determination |
| PODB | Product Order Database |
| PODS | Precision Orbit Determination System |
| POEM | Polar-Orbit Earth Observation Mission |
| POEMS | Positron Electron Magnet Spectrometer |
| POES | Polar-Orbiting Operational Environmental Satellite |
| POGO | Polar-Orbiting Geophysical Observatory |
| POIC | Payload Operations Integration Center |
| POLAR | Polar Plasma Laboratory |
| POLARIS | Photochemistry of Ozone Loss in the Arctic Region In Summer |
| POLDER | Polarization and Directionality of Earth's Reflectances |
| POLES | Polar Exchange At the Sea Surface |
| POM | Potential Monitor (TEDA) |
| POP | Polar-Orbiting Platform |
| POP | Point Of Presence |
| POP | Post Office Protocol |
| POR | Power Off Reset |
| POS | Product Order Status |
| POSIX | Portable Operating System Interface for Computer Environments |
| POSR | Product Order Status Request |
| PPCR | Pass Plan Change Request |
| PPDS | Planning, Processing and Data Server |
| PPF | Payload Preparation Facility |
| PPF | Payload Processing Facility |
| PPL | Preferred Parts List |
| PPLU | Propellant and Pressurant Loading Unit |
| PPM | Principal Period of Maintenance |
| PPP | Point-to-Point Protocol |
| PPR | Payload Preparation Room |
| PPR | Photopolarimeter Radiometer |
| PPS | Portable Platform Simulator |
| PPS | Payload Pointing System |
| PPS | Packets Per Second |
| PPS | Payload Power Supply |
| PPTP | Point-to-Point Tunneling Protocol |
| PQCM | Particulate Quartz Crystal Microbalance |
| PQSR | Project Quarterly Status Review |
| PR | Procurement Request |
| PR | Product Request |
| PR | Polarization Ratio |
| PR | Problem Report |
| PR | Precipitation Radar (TRMM) |
| PRA | Pyro-Relay Assembly |
| PRADS | Primary Attitude Determination System |
| PRAP | Precision Rate and Attitude Packet (ICESat) |
| PRAREE | Precise Range And Range Rate Equipment -- Extended |
| PRB | Problem Report Message |
| PRBS | Pseudo-Random Bit Sequence |
| PRBS | Pseudo-Random Bit Stream |
| PRC | Passive Radiative Cooler (MODIS) |
| PRE | Preformatted (HTML) |
| Pre-MOVE | Pre-Mopitt Oklahoma Validation Experiment |
| PRF | Pulse Repetition Frequency |
| PRF | Pass Results Files |
| PRI | Primary Rate Interface |
| PROM | Programmable Read Only Memory |
| PRONG | Processing Subsystem (CI) |
|
| PROPS | Propulsion Subsystem (Terra AM-1) |
|
| PRR | Preliminary Requirements Review |
| PRT | Platinum Resistance Thermisters |
| Ps | Probability of Station availability |
| PS | Polar Stereographic |
| PS | Processor Sharing |
| PS | Propulsion Subsystem |
| PS | Planning/Scheduling |
| PSAT | Predicted Site Acquisition Table |
| PSC | Premodulation Signal Conditioner |
| PSC | Polar Science Center |
| PSC | Polar Stratospheric Clouds |
| PSCN | Program Support Communications Network |
| PSCNI | Program Support Communication Network-Internet |
| PSD | Planning and Scheduling Data |
| PSDN | Packet Switched Data Network |
| PSDR | Preliminary System Design Review |
| PSIOC | Processor Support and I/O Controller |
| PSK | Phase-Shift Keying |
| PSLA | Project Service Level Agreement |
| PSLA | Program Service level Agreement |
| PSLA | Program Support Level Agreement |
| PSM | Persistent Stored Module |
| PSN | Net Photosynthesis |
| PSO | Project Science Office |
| PSR | Pre-Ship Review |
| PSR | Program Status Review |
| PSRR | Preliminary System Requirement Review |
| PSS | Portable Simulation System |
| PSTN | Public Switched Telephone Network |
| PSU | Power Switching Unit |
| PT | Plain Text |
| PTA | Post-Test Analysis |
| PTP | Programmable Telemetry Processor |
| PTR | Post Test Review |
| PTS | Power Test Set |
| PTS | Prototype Tracking System |
| PTT | Protocol Task Team |
| PU | Processing Unit |
| PVC | Permanent Virtual Circuit |
| PVC | Performance Verification Center |
| PVCC | Permanent Virtual Channel Connection |
| PVL | Parameter Value Language |
| PVPC | Permanent Virtual Path Connection |
| PVT | Performance Verification Test |
| PVV | Project-level Verification and Validation |
| PVVF | Project-specific Verification and Validation Facility |
| PW | Pulse Width |
| PW | Precipitable Water |
| PWB | Planning Workbench |
| PWD | People With Disabilities |
| PWM | Pulse-Width-Modulated |
| PWV | Precipitable Water Vapor |
| P_SDU | Packet Service Data Unit |
| Q | Back to top |
| Q | Quadrature Channel |
| Q/C | Quality Control |
| Q/L | Quick-Look |
| QA | Quality Assurance |
| QA | Quality Assessment |
| QA MUT | Quality Assurance Metadata Update Tool |
| QA SCF | Quality Assurance Science Computing Facility |
| QAM | Quadrature Amplitude Modulation |
| QAWG | Quality Assurance Working Group |
| QB | Quiet Bus |
| QBA | Quiet Bus Side A (for OMI) |
| QBB | Quiet Bus Side B (for OMI) |
| QBO | Quasi-Biennial Oscillation |
| QC | Quality Control |
| QCI | Quality Conformance Inspection |
| QCM | Quartz Crystal Microbalance |
| QDS | Quick-Look Data Set |
| QLBB | Quick-Look Bulletin Board (JPL) |
| QMS | Quality Management System |
| QPR | Quality Project Requirements |
| QPSK | Quadrature Phase Shift Keying |
| QPSK | Quaternary Phase Shift Keying |
| QRU | Query, Retrieve, and Update |
| QT | Quality Test |
| QuikSCAT | Quick Scatterometer |
| R | Back to top |
| R&D | Research and Development |
| R&M | Reliability and Maintainability |
| R&O | Routing and Operations |
| R&QA | Reliability and Quality Assurance |
| R-S | Reed-Solomon |
| R/B | Rate Buffered |
| R/L | Return Link |
| R/T | Real-Time |
| R/W | Read/Write |
| R1 | Release 1 |
| RA | Radar Altimeter |
| RA | Right Ascension |
| RA-2 | Advanced Radar Altimeter (ESA) |
| RAAC | Remote Active Archive Center |
| RAAN | Right Ascension of Ascending Node |
| RAB | Raid Advisory Board |
| RACF | Remote Access Control Facility |
| RACMO | Regional Atmospheric Climate Model |
| RAD | Rapid Application Development |
| RADAR | RAdio Direction And Ranging |
| Radarsat | Radar Satellite (Canada) |
| RADSL | Rate-Adaptive ADSL |
| RAID | Real-Time Application Interactive Debugger |
| RAID | Redundant Array of Independent Disk (Formerly Inexpensive) |
| RAIT | Redundant Array of Inexpensive Tapes |
| RAL | Rutherford Appleton Laboratory (UK) |
| RALT | Radar Altimetry |
| RAM | Random Access Memory |
| RAMIS | Remote Access Management Information System |
| RAMP | Radarsat Antarctic Mapping Program |
| RAMS | Regional Atmospheric Modeling System |
| RAMS | Reliability, Availability, Maintainability and Safety |
| RAP | Rotating Azimuth Plane |
| RARP | Reverse Address Resolution Protocol |
| RARR | Range And Range Rate |
| RAS | Row Address Strobe (Memory Controller Output to DRAMS) |
| RASCAL | Raster Scanning Airborne Laser |
| RASOT | Release A Search and Order Tool |
| RAT | Remote Analysis Terminal |
| RATS | RAID Array Tape System |
| RB | Release B |
| RB | Rate Buffered |
| RBD | Rate Buffered Data |
| RBD | Reliability Block Diagram |
| RBR | Requirements By Release |
| RC | Radiative-Convective |
| RC | Release Capability |
| RCC | Release Critical Contingency Iteration |
| RCL | Resource Class Libraries |
| RCM | Reliability Centered Maintenance |
| RCM | Real-Time Contact Management Subsystem |
| RCP | Right Circular Polarized |
| RCP | Remote Copy |
| RCS | Reaction Control System |
| RCS | Request Communications Support |
| RCS | Relative Command Sequence |
| RCS | Revision Control System |
| RCSM | Regional Climate System Model |
| RCT | Release Completion Technical (Interchange Meeting) |
| RCTD | Return Channel Time Delay |
| RDA | Remote Database Access |
| RDA | Remote Data Access |
| RDBMS | Relational Database Management System |
| RDCS | Raw Data Capture Subsystem |
| RDD | Return Data Delay |
| RDD | Release Delivery Document |
| RDE | Responsible Design Engineer |
| RDET | Regulated Direct-Energy Transfer |
| RDF | Resource Description Framework |
| RDPS | Raw Data Processing Subsystem |
| RDR | Raw Data Record |
| RDR | Release Design Review |
| RDRAM | Rambus DRAM |
| RDRs | Raw Data Records |
| RDS | Rapid Spacecraft Development |
| RDW | Request for Deviation/Waiver |
| RE | Radiated Emissions |
| REA | Rocket Engine Assembly |
| REA | Reaction Engine Assembly |
| REA | Request for Equitable Adjustment |
| REAC | Acquisition Result |
| REC | Request for Engineering Change |
| REDM | Redundancy Management |
| REEDM | Rocket Exhaust Effluent Diffusion Model |
| REP | Relativistic Electron Precipitation |
| REQ | Service Request Message |
| REQQ | Operation Request |
| REQW | Weekly Request |
| RESACs | Regional Earth Science Applications Centers |
| RESTEC | Remote Sensing Technology Center of Japan |
| RF | Radio Frequency |
| RFA | Remote File Access |
| RFA | Request For Action |
| RFC | Request For Comments |
| RFC | Request For Change |
| RFD | Request For Deviation |
| RFI | Request For Information |
| RFI | Radio Frequency Interference |
| RFS | Request For Service |
| RFS | Radio Frequency Subsystem |
| RFSOC | Radio Frequency Simulation Operations Center |
| RFT | Radio Frequency Terminal |
| RFTS | Radio Frequency Test Set |
| RGB | Red, Green, Blue |
| RGMM | Reduce Geometric Math Model |
| RGPS | Radarsat Geophysical Processor System |
| RGS | Receiving Ground Station (ASF) |
| RH | Relative Humidity |
| RH | Red High |
| RHC | Right-Hand Circular |
| RHCP | Right-Hand Circular (Ly) Polarized |
| RHS | Right Hand Side |
| RICC | Remote Instrument Control Center |
| RICMOS | Radiation Insensitive Complementary Metal Oxide Semiconductor |
| RID | Review Item Discrepancy |
| RID | Reference Identification |
| RIE | Remote Interface Electronics (Unit) |
| RIE | Remote Interface Equipment |
| RIFCA | Redundant Inertial Flight Control Assembly |
| Rinex | Receiver INdependent EXchange format (GPS data) |
| RIO | Reference Identifier Object |
| RIP | Retained Intermediate Products |
| RIP | Router Information Protocol |
| RIR | Release Initiation Review |
| RIS | Retro-Reflector In Space |
| RIS | Requirements Information Sheet |
| RIS24 | 24 Bit Raster Image Set |
| RIS8 | 8 Bit Raster Image Set |
| RISC | Reduced Instruction Set Computer |
| RIT | Real-Time Integrated Testbed |
| RITSS | Raytheon Information Technology and Scientific Services |
| RIU | Remote Interface Unit |
| RIVA | Real-Time Interactive Visualization and Analysis system |
| RL | Red Low |
| RL | Return Link |
| RLA | Repair Level Analysis |
| RLAT | Radiation Lot Acceptance Test |
| RLCC | Remote Launch Control Center |
| RLGC | Return Link Ground Communications |
| RLPC | Return Link Physical Channel |
| RLPF | Return Link Processing Function |
| RLPP | Return Link Physical Port |
| RLRA | Reflectivity Level Reference Altitude |
| RLSS | Return Link Service Session |
| RM | Retrieval Manager |
| RMA | Reliability, Maintainability, Availability |
| RMC | Relay Matrix Control |
| RMI | Java Remote Method Invocation |
| RMM | Risk Mitigation Model |
| RMON | Remote Monitor (SNMP) |
| RMP | Risk Management Panel |
| RMP | Risk Management Plan |
| RMS | Resource Management Software |
| RMS | Resource Management Subsystem |
| ROCSAT-1 | Republic Of China Satellite - Flight 1 |
| ROD | Read-Out Discipline |
| ROG | Reactive Organic Gases |
| ROI | Region Of Influence |
| ROLAP | Relational OLAP |
| ROM | Read Only Memory |
| ROM | Rough Order of Magnitude |
| ROR | Read Out Register |
| ROSE | Request Oriented Scheduling Engine |
| ROSE | Remote Operations Service Element |
| ROT | Remote On-line Terminal |
| RPAF | Relative Product Access Frequency |
| RPC | Remote Procedure Call |
| RPC | Remote Processing Computer |
| RPMA | Retarding Potential Mass Analyzer |
| RPN | Reverse Polish Notation |
| RPR | Restructured Program Review |
| RPS | Redundant Protective System |
| RPV | Remotely Piloted Vehicle |
| RRDB | Recommended Requirements Database |
| RRR | Release Readiness Review |
| RRW | Rate Random Walk |
| RS | Radiated Susceptibility |
| RS | Requirements Specification |
| RSA | Russian Space Agency |
| RSA | Rapid Spacecraft Acquisition |
| RSD | Remote Sensing Database |
| RSDO | Rapid Spacecraft Development Office |
| RSE | Remote Sensing Environment |
| RSL | Reusable Software Library |
| RSM | Replication Server Manager |
| RSR | Release Specification Review |
| RSS | Root Sum Squared |
| RSS | Remote Sensing Systems |
| RSSD | Replication Server System Database |
| RST | Remote Science Terminal |
| RST | Research Search Tool |
| RSVP | Resource Reservation Protocol |
| RT | Remote Terminal |
| RT | Real-Time |
| RTADS | Real-Time Attitude Determination System |
| RTC | Relative Time Commands |
| RTC | Remote Telemetry Command |
| RTCP | Real-Time Control Protocol |
| RTCS | Relative Time Command Sequence |
| RTCS | Real-Time Command Sequence |
| RTCU | Remote Telemetry Control Unit |
| RTI | Research Triangle Institute |
| RTM | Requirements and Traceability Management |
| RTM | Requirements Traceability Matrix |
| RTM | Requirements Traceability Model |
| RTR | Requirements Traceability Report |
| RTRACE | Requirements Traceability Software |
| RTS | Real-Time Subsystem |
| RTS | Real-Time Server |
| RTS | Relative Time Sequence |
| RTS | Remote Tracking Station |
| RTS | Real Time System |
| RTSC | Relative Time Sequence Command |
| RTSP | Real-Time Streaming Protocol |
| RTSS | Real-Time System Simulator |
| RTSW | Real Time Solar Wind |
| RTTY | Radio Teletypewriter |
| RUC | Re-Usable Code |
| RUF | Raw Units File |
| RUT-T | Raw Units Tape-TOMS |
| RVC | Regional Validation Center |
| RVTM | Requirements Verification Traceability Matrix |
| RW | Reaction Wheel |
| RWA | Reaction Wheel Assembly |
| RWIC | Regional Weather Information Center |
| RX/TX | Receiver/Transmitter (Used on 1553B Interface) |
| RXO | Redundanct Crystal Oscillator |
| RZ | Return to Zero |
| RZ-FSK | Return to Zero - Frequency Shift Keying |
| RZS | Range Zero Set |
| S | Back to top |
| S&E | Science and Engineering |
| S&M | Structures and Mechanisms |
| S&MA | Safety and Mission Assurance |
| S&MS | Structures and Mechanisms Subsystem |
| S-GCOS | Space-Based Global Change Observation System |
| S-HTTP | Secure Hypertext Transfer Protocol |
| S-MIME | Secure MIME |
| S-WAN | Secure WAN |
| S/A | Solar Array |
| S/D | Serial Digital |
| S/MIME | Secure MIME |
| S/N | Signal to Noise Ratio |
| S/S | Subsystem |
| S/W | Software |
| S/WA | Software Assurance |
| S/WAN | Secure WAN |
| S/WCI | Software Configuration Item |
| S2000 | Sequoia 2000 Project |
| S4P | Simple Scalable Script-Based Science Processor |
| SA | Single Access |
| SA | System Administrator |
| SA | Selective Availability (GPS) |
| SA | Solar Array |
| SA | Supportability Assessment |
| SAA | Solar Array Assembly |
| SAA | Satellite Active Archive (NOAA) |
| SAAL | Signaling Asynchronous Transfer Mode Adaptation Layer |
| SAB | Science Advisory Board |
| SAC | Security Access Controller |
| SAC | Space Applications Corporation |
| SAC-C | Satelite De Aplicaciones Cientificas-C |
| SAD | Solar Array Drive |
| SADA | Solar Array Drive Assembly |
| SADCO | South African Data Center for Oceanography |
| SADE | Solar Array Drive Electronics |
| SAEF-2 | Spacecraft Assembly and Encapsulation Facility |
| SAES | Solar Array Electrical Simulator |
| SAF | Surface and Atmospheric Flux |
| SAFARI | South Africa Fire-Atmosphere Research Initiative |
| SAFDS | Solar Array Fully Deployed Switch |
| SAFIRE | Spectroscopy of the Atmosphere Using Far Infrared Emission |
| SAFISY | Space Agency Forum on the International Space Year (1992) |
| SAFS | Standard Autonomous File System |
| SAGE | Stratospheric Aerosol and Gas Experiment |
| SAI | Software Action Item |
| SAIC | Science Applications International Corporation |
| SAIS | Security Access Information System |
| SALSA | Semi-Arid Land-Surface-Atmosphere |
| SAM | Storage/Archive Management |
| SAM | System Assurance Manager |
| SAM | Sensing With Active Microwaves |
| SAM | Space-Viewing Analog-Electronic Module (MODIS) |
| SAM | Sun Aperture Mechanism |
| SAM | Stratospheric Aerosol Measurement |
| SAMP | Suspicious Activity Monitoring Protocol |
| SAMPEX | Solar Anomalous & Magnetospheric Particle Explorer |
| SAMS | Stratospheric And Mesospheric Sounder |
| SAMS | Shuttle Antenna Monitoring System |
| SAMS | Support And Maintenance Service |
| SAN | Satellite Access Node |
| SAN | Storage Area Network |
| SAO | Smithsonian Astrophysical Observatory |
| SAP | Service Access Protocol |
| SAP | Service Access Point |
| SAP | Science Advisory Panel |
| SAR | Schedule And Requests |
| SAR | Safety Assessment Report |
| SAR | System Architecture Review |
| SAR | Segmentation And Reassembly |
| SAR | Schedule Add Request |
| SAR | Software Assurance Requirement |
| SAR | Synthetic Aperture Radar |
| SARB | Surface And Atmospheric Radiation Budget |
| SARR | Space Absolute Radiometric Reference |
| SARSAT | SAR Satellite |
| SAS | Spacecraft Analysis Software |
| SAS | Statistical Analysis System |
| SAS | Solar Array Simulator |
| SAS | Single Attached System |
| SAS | Service Accounting Segment (NCC) |
| SAS-C | Scientific Applications Satellite - C |
| SASS | Seasat-A Satellite Scatterometer System |
| SAT | Site Acceptance Test |
| SAT | System Acceptance Test |
| SATAN | Security Administrator Tool for Analyzing Networks |
| SATC | Software Assurance Technology Center (GSFC) |
| SAVE | Solar, Atmospheric Variability Experiment |
| SAVE | Southern African Validation of EOS |
| SAVI | Soil-Adjusted Vegetation Index |
| SB | Survival Bus |
| SBF | Spacecraft Body Fixed |
| SBIU | S-Band Interface Unit |
| SBRC | Santa Barbara Research Center |
| SBRS | Santa Barbara Remote Sensing |
| SBS | Space Background Simulator |
| SBSRV | Subscription Server |
| SBT | S-Band Transponder |
| SBT | Subscription Tool |
| SBUV | Solar Backscatter Ultraviolet |
| SBUV/2 | Solar Backscatter Ultraviolet Spectrometer/2 |
| SC | Solar Diffuser Calibration |
| SC | Spacecraft |
| SC-IGBP | Scientific Committee for the IGBP |
| SCA | Snow-Covered Area |
| SCA | Spacecraft Analyst |
| SCAMA | Station Conferencing And Monitoring Arrangement |
| SCAMA | Satellite Conference and Management Assembly |
| SCANSAR | Scanning Synthetic Aperture Radar |
| SCANSCAT | Scatterometer (Dual Pencil-Beam), Advanced Scatterometer for Studies in Meteorology and Oceanography |
| SCAR | Spacecraft Core Activity Request |
| SCAR-B | Smoke, Clouds, And Radiation-Brazil |
| SCARAB | Scanner for the Radiation Budget |
| SCARABE | Scanner Radiation Budget Experiment |
| SCAT | Scatterometer |
| SCC | Spacecraft Control Computer |
| SCC | Spacecraft Computer |
| SCC | Satellite Control Center |
| SCCAB | South Central Coast Air Basin |
| SCCB | Software Configuration Control Board |
| SCCS | Source Code Control System |
| SCD | Source Control Drawing |
| SCD | Small Conversion Device |
| SCDB | Spacecraft Database |
| SCDM | Scan Mirror/Chopper Drive Module |
| SCDR | System Critical Design Review |
| SCE | Software Configuration Engineer |
| SCE | Secondary Converter Electronics |
| SCE | Spacecraft Command Encoder |
| SCF | Science Computing Facility |
| SCG | Space Communication Group |
| SCH | Contact Schedule Message |
| SCI | Science data stream |
| SCIAMACHY | Scanning Imaging Absorption Spectrometer for Atmospheric Cartography |
| SCICEX | Submarine Arctic Science Cruise (Program) |
| SCID | Spacecraft Identifier |
| SCID | Spacecraft Identification |
| SCIF | Spacecraft Interface |
| SCIGN | Southern California Integrated GPS Network |
| SCIL | Software Critical Items List |
| SCISSAP | Southern Center for the Integrated Study of Secondary Air Pollutants |
| SCITF | Spacecraft Integration and Test Facility |
| SCL | Scheduling Class Libraries |
| SCL | Spacecraft Command Language |
| SCM | Software Configuration Management |
| SCM | Schedule Confirmation Message |
| SCM | Supply Chain Management |
| SCM | Solar Constant Monitor |
| SCMDR | Spacelift Commander |
| SCMP | Software Configuration Management Plan |
| SCN | Specification Change Notice |
| SCN | Software Change Notice |
| SCN DIR | Scan Direction |
| SCO | Spacecraft and Ground Control Operator |
| SCOPE | Scientific Committee On Problems of the Environment |
| SCOR | Scientific Committee for Oceanographic Research |
| SCORE | Satellite Cost Reduction Study |
| SCP | Standard Control Processor |
| SCP | Spacecraft Processor |
| SCP | Spacecraft Control Processor |
| SCP | Satellite Control Processor |
| SCP | Secure Copy |
| SCP | Stored Command Processor |
| SCP | Serial Converter Processor (ERPS component) |
| SCR | Segment Completion Review |
| SCR | System Concept Review |
| SCR | Strip Cahrt Recorder |
| SCR | Software Change Request |
| SCS | Spacecraft Checkout Station (Terra AM-1) |
| SCS | Spacecraft Service Session |
| SCS | Spacecraft Contact Session |
| SCS | Spacecraft Conact Summary |
| SCS | Scene Creation Subsystem |
| SCS | Stored Command Sequence |
| SCS | Spatial Calibration System |
| SCSI | Small Computer System Interface |
| SCSMEX | South China Sea Monsoon Experiment |
| SCT | Spacecraft Time |
| SCT | System Confidence Test |
| SCTC | Spacecraft Test Conductor |
| SCTGEN | Simulated CCSDS Telemetry Generator |
| SCTP | Screened Twisted Pair |
| SCTS | Space Cargo Transportation System |
| SCTT | Spacecraft Test Team |
| SCW | Single Command Write |
| SD | Solar Diffuser |
| SD | Standard Deviation |
| SD | Science Data |
| SD3E | Science Data Segment Data Depository and Distribution Element |
| SDA | Solar Diffuser Assembly |
| SDB | Small Disadvantaged Business |
| SDB | Spacecraft Database |
| SDBC | Small Disadvantaged Business Concern |
| SDC | Standard Propulsion Components |
| SDCS | SAR Data Catalog System |
| SDD | Software Design Document |
| SDD | System Description Document |
| SDD | System Design Document |
| SDD | Solar Diffuser Door |
| SDDU | Science Data Distribution Unit |
| SDE | Software Development Environment |
| SDE | Software Design Environment |
| SDE | Science Data Engineering |
| SDE | Spatial Database Engine |
| SDF | Software Development Facility |
| SDF | Software Development File |
| SDF | Software Development Folder |
| SDF | Science Data Formatter |
| SDF/Sim | Software Development Facility/Simulator |
| SDH | Synchronous Digital Hierarchy |
| SDK | Software Developer’s Kit |
| SDL | Software Development Library |
| SDM | Serial Digital Magnitude |
| SDMS | Schedule and Data Management Subsystem |
| SDMS | Science Data Management System |
| SDN | Schedule Delete Notification |
| SDOC | Science Data Operations Center |
| SDP | Science Data Plan |
| SDP | Software Development Plan |
| SDP | Standard Data Processor |
| SDP | System Development Plan |
| SDP | Science Data Processing |
| SDP | System Definition Phase |
| SDPF | Science Data Processing Facility |
| SDPF | Sensor Data Processing Facility (GSFC) |
| SDPRB | Standard Data Products Resources Board |
| SDPRRB | Standard Data Products Resource Requirements Board |
| SDPS | Science Data Production System |
| SDPS | Science Data Processing Segment (ECS) |
| SDPS | Science Data Processing System |
| SDPS/W | Science Data Processing Software |
| SDPSW | Science Data Production Software |
| SDPTK | Science Data Processing Toolkit |
| SDR | Science Data Record |
| SDR | Sensor Data Record (JPL) |
| SDR | System Design Review |
| SDR | Software Design Review |
| SDR | Schedule Delete Request |
| SDR | Software Discrepancy Report |
| SDRI | Science Data Ready Indicator |
| SDRP | Source Demand Routing Protocol |
| SDS | Science Data Segment |
| SDS | Science Data Standards |
| SDS | System Design Specification |
| SDS | Scientific Data Sets |
| SDSI | Simple Distributed Security Infrastructure |
| SDSL | Symmetric DSL |
| SDSM | Solar Diffuser Stability Monitor |
| SDSO | Space Data Systems Office |
| SDSRS | Science Data Segment RIP Server |
| SDSRV | Science Data Server |
| SDST | Science Data Support Team |
| SDT | Segment Design Teams |
| SDTS | Spatial Data Transfer Standard |
| SDU | Service Data Unit |
| SDU | Software Development Unit |
| SDUF | Software Development and Upgrade Facility |
| SDV | Software Development and Validation |
| SDVF | Software Development and Validation Facility |
| SDVF | Sensor Data Validation Facility |
| SDVF | SMC Service Management Center |
| SE | Support Equipment |
| SE | Single Event (Upset) |
| SE&I | System Engineering and Integration |
| SE/RC | System Evolution/Release C (ECS) |
| SEA | Shunt Element Assemblies |
| SEAL | Simple and Efficient Adaption Layer |
| SeaPAC | SeaWinds Project (JPL) |
| SEASAR | Sea Synthetic Aperature Radar |
| Seasat | Sea Satellite |
| SEASTAR | Spacecraft Flying Seawifs |
| SeaWiFS | Sea-Viewing Wide-Field Sensor |
| SeaWinds | Seawinds Scatterometer (for Flight on ADEOS II) |
| SEB | Single Event Burn-Out |
| SEB | Surface Energy Balance |
| SEB | Source Evaluation Board |
| SEBAL | Surface Energy Balance |
| SEC | South Equator Crossing |
| SEC | Single Edge Connect |
| SEC | Sustaining Engineering Capability |
| SECDEC | Single Error Correction Double Error Code |
| SECDED | Single-Bit Error Correction With Double-Bit Error Detection |
| SECDED | Single Error Correction, Double Error Detection |
| SECO | Second Engine Cut-Off |
| SEDAC | Socio-Economic Data and Applications Center (CIESIN) |
| SEE | Single Event Effect |
| SEE | Sustaining Engineering Facility (EDOS Component) |
| SEEDS | Strategic Evolution of ESE Data Systems (formerly NewDISS) |
| SEER | System Evaluation and Estimate of Resources |
| SEF | Sustaining Engineering Facility |
| SEF | Subjective Evaluation Form |
| SEF | Sustaining Engineering Facility (EDOS) |
| SEGR | Single Event Gate Rupture |
| SEI | Software Engineering Institute |
| SEI&T | System Engineering, Integration, and Test |
| SEIO | Systems Engineering and Integration Office |
| SEL | Single Event Latch-Up |
| SELV | Small Expendable Launch Vehicle |
| SEM | System Element Management |
| SEM | Space Environmental Monitor |
| SEM | Scanning Electron Microscope |
| SEM | Space Experiment Module |
| SEM | System Engineering Manager |
| SEN | Software Engineering Notebook |
| SEP | Systems Engineering Plan |
| SEP | Support Electronics Package |
| SER | Scientific, Engineering and Research |
| SER | System Engineering Report |
| SERC | Science and Engineering Research Council (UK) |
| SES | Scheduling and Execution Subsystem |
| SES | Solid Earth Science |
| SES2 | Second Stage Engine Start (#2) |
| SESAME | Second European Stratospheric Arctic and Mid-latitude Experiment |
| SESPD | Space and Earth Science Programs Directorate (JPL) |
| SET | Secure Electronic Transaction Specification |
| SEU | Single Event Upset |
| SEVIRI | Spinning Enhanced Visible and Infrared Imager |
| SFA | Safety and Flight Assurance |
| SFDU | Standard Formatted Data Unit |
| SFE | Science Formatting Equipment (Terra AM-1) |
| SFM | Spacecraft Fault Management |
| SFM | System Fault Manager |
| SFOS | Spacecraft Flight Operations Services |
| SFR | Software Failure Report |
| SFTP | SSH (Secure) File Transfer Protocol |
| SG | Signal Generator |
| SGI | Silicon Graphic Incorporated |
| SGLT | Space-Ground Link Terminal |
| SGML | Standard Generalized Markup Language |
| SGP | Southern Great Plains |
| SGS | Svalbard Ground Station |
| SGS | Spitzbergen Ground Station (Norway) |
| SGS | Svalbard Ground Station (Norway) |
| SH | Safety Hazard |
| SHA-1 | Secure Hash Algorithm 1 |
| SHADOZ | Southern Hemisphere Additional Ozonesondes Project |
| SHEBA | Surface HEat Budget of the Arctic ocean project |
| SHEDS | Spacecraft Hardware Environmental Test Database System |
| SHIA | Safety, Health and Independent Assessment |
| SHM | Sun Hold Mode |
| SHO | Service Schedule Order |
| SHO | Spacecraft Handover |
| SHO | Scheduling Orders |
| SHP | Safehold Package |
| SHS | Second Half Scan Error |
| SI | System International d’Unites (International System of Units) |
| SI | Solar Influences |
| SI | Smithsonian Institution |
| SI | Subinterval |
| SI | ERSDAC ASTER GDS System Integrator Contractor (JGI) |
| SI&P | System Integration and Planning |
| SI&T | System Integration and Test |
| SIAT | Spacecraft & Instrument Activation Test |
| SiB | Simple Biosphere Model |
| SIC | Standard Interface Connector |
| SIC | Standard Industrial Classification |
| SIC | Support Identification Code |
| SICP | System Interface Control Plan |
| SIDT | Server Interconnection Diagramming Tool |
| SIF | Secondary Intermediate Frequency |
| SIFP | System Implementation and Facility Plan |
| SIG | Special Interest Group |
| SIG | System Integration Group |
| SIIS | Spacecraft/Instrument Interface Simulator |
| SIL | Solid Immersion Lens |
| SIM | Single Interface Module |
| SIM | Subscriber Identity Module |
| SIM | Spectral Irradiance Monitor |
| SIMBIOS | Sensor Intercomparison and Merger for Biological and Interdiscplinary Oceanic Studies |
| SIMD | Single Instruction, Multiple Data |
| SIMIP | Sea Ice Model Intercomparison Project |
| SIMM | Single In-Line Memory Module |
| SIMMS | Scalable Integrated Multi-Mission Simulator |
| SINDA | System Improved Numerical Differencing Analyzer |
| SIO | Scripps Institution of Oceanography |
| SIP | Standard Internet Provider |
| SIPS | Science Investigator-Led Processing System |
| SIR | Spaceborne Imaging Radar |
| SIR | Shuttle Imaging Radar |
| SIR | Sustained Information Rate |
| SIR | Supplier Information Request |
| SIR-B | Shuttle Imaging Radar-B |
| SIR-C | Spaceborne Imaging Radar-C |
| SIR-C | Shuttle Imaging Radar-C |
| SIR-C/X-SAR | Spaceborne Imaging Radar-C/X-Band SAR |
| SIRD | Support Instrumentation Requirements Document |
| SIRD | System Interface Requirements Document |
| SIRF | Scatterometer Image Reconstructive Filtering |
| SIRU | Science Inertial Reference Unit |
| SIS | Spacecraft Interface Simulator (Also SIIS) |
| SIS | Stored Instruction Sequence |
| SISEX | Shuttle Imaging Spectrometer Experiment |
| SISP | Surface Imaging and Sounding Package |
| SISS | Software Implementation Support System |
| SISTER | Summer Institute in Science, Technology, Engineering and Research |
| SIT | System Implementation Team |
| SIT | System Integration Test |
| SITP | System Integration Test Plan |
| SITUPS | Spatial Integrity Thresholding of Urban Polygons |
| SITWG | System Integration and Test Working Group |
| SKIP | Simple Key Management for Internet Protocol |
| SKP | Stationkeeping Platform |
| SKS | commercial station |
| SKS | Svalbard Kongsberg Ground Station |
| SL | Scan Line |
| SL | Science Liaison |
| SL3 | Sensitivity Level 3 |
| SLA | Shuttle Laser Altimetry |
| SLA | Service Level Agreement |
| SLAM | Spacecraft Loads and Acoustics Measurements |
| SLAMS | State and Local Air Monitoring System |
| SLAN | Support LAN |
| SLAP | Space Link Access Protocol |
| SLAR | Side-Looking Airborne Radar |
| SLC | Space Launch Complex |
| SLC | Spacecraft Launch Complex |
| SLC-2W | Space Launch Complex - 2 West |
| SLC-4E | Space Launch Complex - 4 East |
| SLD | Second Level Destination |
| SLD | Scan Line Data |
| SLE | Single Loss Expectancy |
| SLF | Space Launch Facility |
| SLIES | Stratospheric Limb Infrared Emission Spectrometer |
| SLIP | Serial Line Internet Protocol |
| SLO | Scan Line Offset |
| SLOC | Single Lines Of Code |
| SLOC | Source Line Of Code |
| SLR | Satellite Laser Ranging |
| SLR | System Level Review |
| SLR | Service Level Report |
| SLS | Second-Level Source |
| SLTP | System Level Test Procedure |
| SLV | Standard Launch Vehicle |
| SM | Structure and Mechanisms |
| SM | Specification Manual |
| SMA | S-Band Multiple Access |
| SMA | Safety and Mission Assurance |
| SMA | Semi-Major Axis |
| SMA | Scan Mirror Assembly |
| SMA/MA | S-Band Multiple Access/Multiple Access |
| SMAF | S-Band Multiple Access Forward |
| SMAR | S-Band Multiple Access Return |
| SMB | Safe Mode Bus |
| SMC | System Monitoring and Coordination Center |
| SMC | System Management Center |
| SMC | Safe Mode Controller |
| SMC | Small Magellenic Cloud |
| SMC | System Monitoring Center |
| SMCI | System Management Configuration Item |
| SMD | Standardized Manufacturing Device |
| SMD | Standardized Manufacturing Drawing |
| SMDS | Switched Multimegabit Data Service |
| SMDS | Synchronous Multi-Megabit Data Service |
| SME | Solar Mesosphere Explorer |
| SMEX | Small Explorer |
| SMF | Status Message File |
| SMF | System Management Function |
| SMF | Status Message Facility |
| SMIP | Seasonal Model Intercomparison Project |
| SMIU | Safe Mode Interface Unit |
| SMM | Solar Maximum Mission |
| SMM/I | Special Sensor Microwave/Imager |
| Smmmit | Serial m-Coded Monolithic Multi-Mode Intelligent Terminal |
| SMMR | Scanning Multichannel Microwave Radiometer |
| SMO | Systems Management Office |
| SMOBA | Stratosphere Monitoring Group Ozone Blended Analysis |
| SMON | Status Monitor |
| SMP | Shared Memory Processors |
| SMP | Software Management Plan |
| SMP | Symmetric Multi-Processor |
| SMP | Symmetric Multiprocessing |
| SMP | Safe Mode Processor |
| SMP | Systems Management Policy |
| SMPMD | Storage Management Pull Monitor Database |
| SMR | System Management Review |
| SMR | Specialized Mobile Radio |
| SMRM | Solar Maximum Repair Mission |
| SMRWG | Science and Mission Requirements Working Group |
| SMS | Short Messaging Service |
| SMS | Structures and Mechanisms Subsystem (Terra AM-1) |
| SMS/GOES | Synchronous Meteorological Statellite/Geostationary |
| SMT | Station Management |
| SMT | Session Management Tool |
| SMTP | Simple Mail Transport Protocol |
| SMTS | Space Missile Tracking System |
| SMUX | Simple Network Management Protocol Multiplexing |
| SMVGEAR | Sparse-Matrix Vectorized Gear Code |
| SN | Space Network |
| SNA | Systems Network Architecture |
| SNAP | Subnetwork Access Protocol |
| SNC | Space Network Control |
| SNCC | Space Network Control Center |
| SNDCP | Subnetwork Dependent Convergence Protocol |
| SNEWS | Secure News Server (Internet) |
| SNICP | Subnetwork Independent Convergence Protocol |
| SNM | Systems and Network Management |
| SNMP | Simple Network Management Protocol |
| SNOE | Student Nitric Oxide Explorer |
| SNOTEL | Snow-Water-Equivalent Telemetered Data |
| SNR | Signal-to-Noise Ratio |
| SNS | Space Network Segment |
| SO | Scheduling Operator |
| SOAR | Spacecraft Orbital Anomaly Report |
| SOC | Science Operations Center |
| SOC | Simulations Operations Center |
| SOC | Space Operations Center |
| SOC | Status Of Charge |
| SOCB | Space Operations Control Board |
| SOCC | Science Operations Control Center |
| SODM | Spacecraft Operations Description Manual |
| SODR | Spaceflight Optical Disk Recorder |
| SOE | Spacecraft Operations Exercise |
| SOE | Sequence of Events |
| SOFT | Software Operations Focus Team |
| SOGS | Science Operations Ground Station |
| SOH | State Of Health |
| SOHO | Solar and Heliospheric Observatory |
| SOI | Southern Oscillation Index |
| SOIs | Software Operating Instructions |
| SOLAS | Surface Ocean Lower Atmosphere Study |
| SOLCON | Solar Constant Radiometer |
| SOLSE | Shuttle Ozone Limb Sounder Experiment |
| SOLSPEC | Solar Spectrum Radiometer |
| SOLSTICE | Solar Stellar Irradiance Comparison Experiment |
| SOM | Space Oblique Mercator |
| SOM | System Object Model |
| SOMO | Space Operations Management Office |
| SONET | Synchronous Optical Network |
| SONEX | Subsonic Ozone and Nitrogen Experiment |
| SOO | Science Operations Office |
| SOP | System Operations Plan |
| SOP | Standard Operating Procedures |
| SOP | Start Of Packet |
| SOR | System Operations Review |
| SORCE | Solar Radiation and Climate Experiment |
| SORD | System Operations Requirements Document |
| SORR | Segment Operational Readiness Review |
| SORR | Spacecraft Operations Readiness Review |
| SOS | Southern Oxidants Study |
| SOS | Software Only Simulator |
| SOTA | Special Operations and Test Area |
| SOW | Statement of Work |
| SOWG | Science Operations Working Group |
| SP | Service Protocol |
| SP | Scenario Primitive |
| SP&IO | Sensor Processing and I/O Electronics (CERES) |
| SPADE | Stratospheric Photochemistry, Aerosols and Dynamics Expedition |
| SPAM | Spectral Analysis Manager (EDC) |
| SPAN | Space Physics Analysis Network |
| SPANS | Simple Protocol for Asynchronous Transfer Mode Network Signaling |
| SPAR | STS Payload Assurance Requirements |
| SPARC | Single Processor Architecture |
| SPARC | Stratospheric Processes And Their Role in Climate |
| SPC | Stratospheric Polar Clouds |
| SPC | Satellite Processing Center |
| SPC | Serial Processor Control |
| SPC | Standard Propulsion Components |
| SPCR | Software Problem Change Report |
| SPCS | State Plane Coordinates Spheroid |
| SPCZ | South Pacific Convergence Zone |
| SPDB | Science Processing Database |
| SPE | Sensor Processing Electronics |
| SPE | Solar Particle Event |
| SPF | Software Production Facility |
| SPF | Single Point of Failure |
| SPG | Single Point Ground |
| SPI | Schedule Performance Index |
| SPIE | Society for Photo-Optical Instrumentation Engineers |
| SPIF | Shuttle POCC Interface Facility |
| SPL | Science Processing Library |
| SPM | Sun Pointing Mode |
| SPM | Signal Processing Module |
| SPN | Shared Processing Network |
| SPOC | Science Planning and Operations Center |
| SPOD | Suborbital Projects and Operations Directorate |
| SPR | Software Problem Report |
| SPR | Software Production Research |
| SPR | Science Processor (Workstation) |
| SPRHW | Science Processing Hardware [Configuration Item] |
| SPS | Software Program Specification |
| SPS | Serial Processor Sensor |
| SPS | Service Planning Segment (NCC) |
| SPS | SAR Processing System (ASF) |
| SPS | Science Processing Software |
| SPSC | Science Processing Support Center |
| SPSH | Sun Pointing Safehold |
| SPSO | Science Processing Support Office |
| SPSR | Service Planning Segment Replacement |
| SPSS | Science Processing Software Segment |
| SPSS | Science Planning and Scheduling System |
| SQA | Software Quality Assurance |
| SQL | Structured Query Language |
| SQPN | Staggered Quadriphase Pseudo-Random Noise |
| SQPSK | Staggered Quadra-Phase Shift Keying |
| SQR | SQL Report Writer |
| SQS | Spatial Query Server |
| SR | Sun Rise |
| SR | Site Readiness |
| SRA | Slip Ring Assembly |
| SRA | Site Readiness Assessment |
| SRAM | Static RAM |
| SRAM | Static Random Access Memory |
| SRB | Systems Review Board |
| SRB | Software Review Board |
| SRB | Surface Radiation Budget |
| SRB | Service Request Bit |
| SRBEX | Susquehanna River Basin Experiment |
| SRCA | Spectro-Radiometric Calibration Assembly |
| SRD | Sensor Requirements Document |
| SRD | System Requirements Document |
| SRE | State Recognition Engine |
| SREM | Software Requirements Engineering Methodology |
| SRF | Service Request Framework |
| SRL | Shuttle Research Laboratory |
| SRM | Solid Rocket Motor |
| SRM | System Resource Model |
| SRM | Schedule Request Message |
| SRM | Schedule Result Message |
| SRM&QA | Safety, Reliability, Maintainability, and Quality Assurance |
| SRMC | Satellite Resources Management Center |
| SRP | Science Review Panel |
| SRP | Standard Repair Procedure |
| SRR | System Requirements Review |
| SRR | Software Requirements Review |
| SRR | Site Readiness Review |
| SRR | Schedule Result Request |
| SRRD | Raw Data Shipment Report |
| SRS | Software Requirements Specification |
| SRS | Scene Request Subsystem |
| SRS/GPS | Stellar Reference System/Global Positioning System |
| SRT | System Readiness Test |
| SRT | Science Review Team |
| SRTM | Shuttle Radar Topography Mission |
| SS | Space Station |
| SS | System Storage |
| SS PCMB | Science Systems PCMB |
| SSA | S-Band Single Access |
| SSA | Solid State Altimeter (See EOS ALT) |
| SSA | Sun Sensor Assembly |
| SSAF | S-Band Single Access Forward |
| SSAI | Science System Applications Incorporated |
| SSALT | Solid State Altimeter |
| SSAP | Science Software Archive Package |
| SSAR | S-Band Single Access Return |
| SSB | Space Studies Board |
| SSBUV | Shuttle Solar Backscatter Ultraviolet |
| SSC | Science Steering Committee |
| SSC | Stennis Space Center |
| SSD | Science Systems Division |
| SSDD | System/Segment Design Document |
| SSDM | Seas System Development Methodology |
| SSDO | Science Systems Development Office |
| SSE | Software Support Environment |
| SSE | Subsystem Engineer |
| SSEC | Space Science and Engineering Center (University of Wisconsin) |
| SSEF | Spacecraft Sustaining Engineering Facility |
| SSEP | Science Software Executable Package |
| SSER | Simulation and Sustaining Engineering Room |
| SSF | Scripps Satellite Facility |
| SSF | Space Station Freedom |
| SSF | System Support Function |
| SSF | Single Satellite Footprint (CERES) |
| SSFM | Subsystem Fault Management |
| SSFMB | Space Station Freedom Manned Base |
| SSG | Science Steering Group |
| SSH | Secure Shell |
| SSH | Sun Shield |
| SSHA | System Safety Hazard Analysis |
| SSI | Science Support Interface |
| SSI | Software Support Instruction |
| SSI&T | Science Software Integration and Test |
| SSIL | Security-Sensitivity Items List |
| SSIM | Spacecraft Simulator |
| SSIT | Science Software Integration and Test |
| SSL | Secure Socket Layer (Protocol) |
| SSL | Space Systems Laboratory |
| SSM | Spacecraft Systems Manager |
| SSM/I | Special Sensor for Microwave/Imager |
| SSM/I | Special Sensor Microwave/Imager |
| SSM/T | Special Sensor Microwave/Temperature Sounder |
| SSO | Single Sign-On |
| SSP | Service Support Plan |
| SSP | Seawinds Standard Products |
| SSPA | Solid-State Power Amplifier |
| SSPA | Sensor, Solar Panel |
| SSPF | Space Station Processing Facility |
| SSPP | Solar Stellar Pointing Platform |
| SSR | Solid State Recorder |
| SSR | System Software Review |
| SSR | System Specification Review |
| SSR | System Safety Review |
| SSR | Software Specification Review |
| SSRP | Science System Release Plan |
| SSRR | Software System Requirement Review |
| SSS | Software Segment Specification |
| SSS | Subinterval Staging Subsystem |
| SSSG | Science Scheduling Support Group (US and Japan) |
| SSSM | Science Software Systems Manager |
| SSST | Solid State Star Tracker |
| SST | Sea Surface Temperature |
| SSTI | Small Spacecraft Technology Initiative |
| SSTI | Smallsat Technology Initiative |
| SSTRAT | Stratospheric Tracers of Atmospheric Transport |
| SSU | Stratospheric Sounding Unit |
| SSW | Sudden Stratospheric Warming |
| ST | Switchover Time |
| ST | Star Tracker |
| ST | Science Team |
| STA | Science and Technology Agency (Japan) |
| STA | Star Tracker Assembly |
| STAAC | Systems Technology And Advanced Concepts Directorate |
| STAJ | Science and Technology Agency of Japan |
| STAR | Science Team Acquisition Request |
| START | SysTem for Analysis, Research and Training |
| STC | System Test Console |
| STC | System Test Computer |
| STCF | Short Term Data Capture Function |
| STD | Software Test Document |
| STD | Software Test Description |
| STDN | Spaceflight Tracking and Data Network |
| STDN | Spacecraft Tracking and Data Network |
| STDN CTV | Stdn Compatibility Test Van |
| STDN/DSN | Spaceflight Tracking and Data Network/Deep Space Network |
| STDS | Short-Term Data Storage |
| STE | Special Test Equipment |
| STE | State Transition Engine |
| STE | State Transition Editor |
| STE | System Test Equipment |
| STEDI | Student Explorer Demonstration Initiative |
| STEP | Space Test Experiment Platform |
| STGS | Station Status Info |
| STGT | Second TDRSS Ground Terminal |
| STIKSCAT | Stick Scatterometer |
| STIP | Short-Term Instrument Plan |
| STK | Satellite Tool Kit |
| STL | Science and Technology Laboratory |
| STL | Systems Technology Laboratory |
| STM | Synchronous Transfer Mode |
| STM | Structural Test Module |
| STM | Science Team Member |
| STMD | Selectable Telemetry Display |
| STMGT | Storage Management |
|
| STOC | System Test and Operations Console |
| STOL | System Test and Operations Language |
| STOP | Short-Term Operations Plan |
| STP | Software Test Plan |
| STP | Short-Term Plan |
| STP | System Test Plan |
| STP | System Test Procedure |
| STP | Startup/Terminate Program |
| STP | Standard Temperature and Pressure |
| StP | Software Through Pictures |
| StP/OMT | Software Through Pictures/Object Modeling Technique |
| STPS | Summary Task Planning Sheets |
| STPS | Simulated Telemetry Processor System |
| STPS | Software Telemetry Processor System |
| STPS | S-band Telemetry Processing System |
| STR | System Test Review |
| STR | Software Trouble Report |
| STRAT | Statospheric Tracers of Atmospheric Transport |
| STREX | Storms Response Experiment |
| STRS | System Technical Requirements Specification (OMI) |
| STRV | Space Test Research Vehicle |
| STRW | System Test Readiness Walkthrough |
| STS | Space Transportation System |
| STS | Short Term Schedule |
| STS | Scene Transfer Subsystem |
| STS-3c | Synchronous Transport System - Level 3 Concatenated |
| SU | Sensor Unit |
| SUB-MM | Sub-Millimeter Spectrometer |
| SUCCESS | Subsonic Aircraft Contrail and Clouds Effects Special Study |
| SUM | Single Event Upset Monitor (TEDA) |
| SUPIDEN | Support Identifier |
| SUR | Seamless User Registration |
| SURFRAD | Surface Radiation (NOAA) |
| SUROM | Start-Up Read Only Memory |
| SUSIM | Solar Ultraviolet Spectral Irradiance Monitor |
| SUST | Sustained |
| SV | Space Vehicle |
| SV | System Verification |
| SV | State Vector |
| SV | Space View |
| SVA | Svalbard |
| SVA | Space View Aperture |
| SVAT | System Verification/Acceptance Testing |
| SVC | Switched Virtual Circuit |
| SVD | System Verification Diagram |
| SVD | Space View Door (MODIS) |
| SVF | Shuttle Vibration Forces |
| SVI | Spectral Vegetation Indices |
| SVP | Switched Virtual Path |
| SVS | Space View Source (MODIS) |
| SW/LW | Software/Long Wave |
| SWAMP | Science Working Group for the AM Platform |
| SWAP | Simple Workflow Access Protocol |
| SWAR | Software Acceptance Review |
| SWCDR | Software Critical Design Review |
| SWCR | Software Concept Review |
| SWCRF | Sw Cloud Radiative Forcing |
| SWE | Snow Water Equivalent |
| SWG | Science Working Group |
| SWGD | Science Working Group on Data |
| SWICD | Software Interface Control Document |
| SWIL | System Wide Interface Layer |
| SWIR | Short Wave Infrared |
| SWIRLS | Stratospheric Wind Infrared Limb Sounder |
| SWIT | Software Integration Test |
| SWO | Security Watch Operator |
| SWPDR | Software Preliminary Design Review |
| SWRR | Software Requirements Review |
| SWS | Sea Winds |
| SWSI | Single Wire Serial Interface |
| SWT | Science Working Team |
| SWTB | Software Test Bench |
| SWTR | Software Test Readiness Review |
| SXI | Solar X-Ray Imager |
| SYSLOG | System Log |
| T | Back to top |
| T&C | Telemetry and Command |
| T&CC | Telemetry and Command Console |
| T&DA | Tracking and Data Acquisition |
| T&F | Time and Frequency |
| T&TM | Time and Time Mark |
| T-S | Temperature-Salinity |
| T/DC | Time/Date Conversion |
| T/EC | Tivoli Enterprise Console |
| T/L | Talk/Listen |
| T/V | Thermal/Vacuum |
| T1 | T1 Data Link, 1.5 Mbps Bandwidth |
| T3 | T3 Data Link, 50 Mbps Bandwidth |
| TAA | Technical Assistance Agreement |
| TAC | Test Analysis Controller |
| TAC | Template Alignment Cube |
| TAC | Telemetry And Command Computer |
| TAD | Telemetry Allocation Document |
| TAE | Transportable Applications Executive, Computer |
| TAE | Transportable Applications Environment |
| TAG | Tested And Guaranteed |
| TAG | Text And Graphics System |
| TAI | International Atomic Time |
| TAM | Three-Axis Magnetometer |
| TAM | Triaxial Magnetometer |
| TAO | Toga Automated Observation |
| TAO | Tropical Atmosphere Ocean |
| TAPI | Telephone API |
| TARA | Two-Axis Reference Assembly (Kerfott Gyro Assembly Model) |
| TARFOX | Tropospheric Aerosol Radiative Forcing Experiment |
| TAT | Technical Assessment Team |
| TAT | Antenna Temperature Tape |
| TAXI | Transparent Asynchronous Transmitter/Receiver Interface (chip for high rate data transfer) |
| TBA | To Be Assigned |
| TBC | To Be Continued |
| TBC | To Be Completed |
| TBD | To Be Determined |
| TBD | To Be Defined |
| TBN | To Be Numbered |
| TBR | To Be Resolved |
| TBR | To Be Reviewed |
| TBS | To Be Supplied |
| TBSW | Test Bed Software |
| TBV | To Be Verified |
| TBW | To Be Written |
| TC | Thermal Control |
| TC | Telecommand |
| TC | Test Coordinator |
| TC | Test Conductor |
| TCA | Thrust Chamber Assembly |
| TCA | Test Configuration Audit |
| TCAD | Telemetry Checking, Analysis, and Display |
| TCC | Temporary Control Center |
| TCD | Test Capability Delivery |
| TCL | Thermal Control Location |
| TCP | Transport Control Protocol |
| TCP | Transmission Control Protocol |
| TCP | Telemetry and Command Processor |
| TCP | Tropospheric Chemistry Program |
| TCP/IP | Transmission Control Protocol/Internet Protocol |
| TCR | Table Change Request |
| TCS | Thermal Control Subsytem (Terra AM-1) |
| TCS | Thermal Control System |
| TCTF | Telecommand Transfer Frame |
| TCTF-ID | Telecommand Transfer Frame Identifier |
| TCTS | Telemetry and Command Test Set |
| TCTS | Telemetry and Command Test System |
| TCXO | Temperature Controlled Crystal Oscillator |
| TCXO | Temperature Compensated Crystal Oscillator |
| TD | Time Date Conversion |
| TD | Task Descriptor |
| TD&D | Technical Data and Documentation |
| TDAC | Tracking, Data Acquisition, and Communications |
| TDB | Barycentric Dynamical Time |
| TDD | Telecommunication Device for the Deaf |
| TDE | Torque Drive Electronics |
| TDE | TDRS East |
| TDF | Telemetry Data Formatter |
| TDM | Test Data Management |
| TDM | Time Division Multiplexing |
| TDMA | Time Division Multiple Access |
| TDP | Technical Data Package |
| TDP | Tabular Datastream Protocol |
| TDP | Telemetry Data Processing |
| TDR | Temperature Data Record |
| TDR | Tracking and Data Relay |
| TDR | Test Discrepancy Report |
| TDRS | Tracking and Data Relay Satellite |
| TDRS Z | Tracking and Data Relay Satellite Zoe |
| TDRS-E | Tracking and Data Relay Satellite - East (Longitude) |
| TDRS-W | Tracking and Data Relay Satellite - West (Longitude) |
| TDRSGS | TDRS Ground Station |
| TDRSS | Tracking and Data Relay Satellite System |
| TDS | TDRS-Spare |
| TDSWG | Test Data Set Working Group |
| TDT | Terrestrial Dynamical Time |
| TDU | Telemetry Data Unit |
| TDW | TDRS West |
| TDZ | TDRS Z |
| TE | Test Executable |
| TEC | Tivoli Enterprise Console |
| TED | Total Energy Detector |
| TEDA | Technical Data Acquisition Equipment (ADEOS) |
| TEEGIS | TRMM End-to-End Ground Information System |
| TEI | Text Encoding Initiative (Pre-Web) |
| TEK | Tektronics (company) |
| TELNET | Telecommunication Network |
| TEM | Terrestrial Ecosystem Model |
| TEP | TOMS Earth Probe |
| Terra | Formerly called the AM project (Under the Earth Science Enterprise Program) |
| TERRIERS | Tomographic Experiment using Radiative Recombinative Inosopheric EUV and Radio Sources |
| TERSE | Tunable Etalon Remote Sounder of Earth |
| TES | Tropospheric Emission Spectrometer |
| TES | Temperature and Emissivity Separation Algorithm |
| TESS | Terra End-to-End Science System |
| TF | Transfer Frame |
| TF | Transfer Function |
| TF | Trending Facility |
| TFA | Transfer Frame Assembly |
| TFB | Time Frequency Bus |
| TFEC | Transfer Frame Error Control |
| TFG | Transfer Frame Generator |
| TFN | Transfer Frame (Switching) Network |
| TFN | Tribal Flood Network |
| TFOV | Thermal Field Of View |
| TFT | Thin Film Transistor |
| Tg | Glass Transition Temperature |
| TGDDIS | Trace Gas Dynamics Data and Information System |
| TGM | Trace Gas Model |
| TGS | Ticket Granting Service |
| TGS | Time Generation System |
| TGSS | TONS Ground Support System |
| TGT | TDRSS Ground Terminal (Replace By NGT) |
| TGT | Ticket Granting Ticket |
| TGT | TDRSS Ground Terminal |
| TH | Thermal Hardware |
| TH | Technical Handbook |
| THC | Total Hydrocarbons |
| THESEO | Third European Stratospheric Experiment on Ozone |
| THIR | Temperature/Humidity Infrared Radiometer (Nimbus) |
| THM | Terrestrial Hydrology Model |
| THREDDS | THematic Realtime Environmental Distributed Data Services |
| TIA | The Internet Adapter |
| TIB | Test Interface Board |
| TICD | Thermal Interface Control Drawing |
| TICTOC | Test, Integration and Certification Test Oversight Committee |
| TID | Thermal Interface Drawing |
| TID | Thermal Interface Document |
| TIE | Transponder Interface Electronics |
| TIEnet | Trw Information Exchange Network |
| TIFF | Tagged Image File Format |
| TIGER | Thermal Infrared Ground Emission Radiometer |
| TILDAS | Tunable Infrared Laser Differential Absorption Spectrometer |
| TIM | Technical Interchange Meeting |
| TIM | Technical Issue Memorandum |
| TIM | Total Irradiance Monitor |
| TIME-GCM | Thermosphere-Ionosphere-Mesosphere-Electrodynamics General Circulation Model |
| TIMED | Thermosphere, Ionosphere, Mesosphere, Energetics, Dynamics |
| TIMS | Thermal Imaging Spectrometer |
| TIMS | Technical Information Management System |
| TIP | Technical Information Program |
| TIR | Thermal Infrared |
| TIR | Thermal Infrared Radiometer |
| TIROS | Television Infrared Observation Satellite |
| TIS | Test Information Sheets |
| TISA | Temporal Interpolation and Spatial Averaging |
| TISA | Time Interpolation and Spatial Averaging |
| TISF | Tape Inventory Sequential Files (GSFC) |
| TIV | Titan |
| TK | Toolkit |
| TKE | Thermal Knife Electronics |
| TL | Team Leader |
| TL | Top Level |
| TLCF | Team Leader Computing Facility |
| TLD | Terry L. Dunbar (Name of compiler and company) |
| TLE | Two Line Element (NORAD) |
| TLI | Transport Library Interface |
| TLM | Telemetry |
| TLS | Transport Layer Security |
| TLSCF | Team Leader Science Computing Facility |
| TLT | Test Loop Translator |
| TM | Team Member |
| TM | Thematic Mapper (Landsat) |
| TM | Technical Memo |
| TM | Tranverse Mercator |
| TM | Technical Mananger |
| TM | Telemetry Manager |
| TM | Trademark |
| TM&F | Time Mark and Frequency |
| TM2000/2K | Test Manager 2000 |
| TMCF | Team Member Computing Facility |
| TMDB | Technical Management Database (ECS) |
| TMDB | Test Management Database |
| TME | Tivolo Management Environment |
| TMF | Time Marked Frequency |
| TMF | Trends Mnemonic File |
| TMI | TRMM Microwave Imager |
| TMIS | Technical Management Information System |
| TML | Total Mass Loss |
| TMN | Telecommunications Management Network |
| TMON | Telemetry Monitor |
| TMP | Transportation Management Plan |
| TMR | Topex Microwave Radiometer |
| TMS | Thematic Mapper Simulator |
| TMT | Transition Management Team |
| TMWG | Test Methodology Working Group |
| TN | TDRSS Network |
| TN | Transmittal Notice |
| TN | Technical Note |
| TNA | TDRSS Network Analyst |
| TNS | TDRSS Network System |
| TO | Technical Officer |
| TOA | Top Of the Atmosphere |
| TOC | Table Of Contents |
| TOCC | Test Operations Control Center |
| TOD | True Of Date |
| TOD | Time Of Day |
| TOGA | Tropical Ocean Global Atmosphere |
| TOGA/COARE | Toga/Coupled Ocean Atmosphere Response Experiment |
| TOMS | Total Ozone Mapping Spectrometer |
| TOMS-EP | Total Ozone Mapping Sepctrometer-Earth Probe |
| TOMUIS | 3-D Ozone Mapping With Ultraviolet Imaging Spectrometer |
| TONS | TDRSS On-Board Navigational System |
| TOO | Target Of Opportunity |
| TOP | Terrestrial Observation Panel |
| TOPEX | Topography (Ocean) Experiment (Joint US-France) |
| TOPS | Tape Order Processing System (LaRC) |
| TOPSAR | Topographic Synthetic Aperture Radar |
| TOS | Test Operating System |
| TOTE | Tropical Ozone Transport Experiment |
| TOTS | Transportable Orbital Tracking System |
| TOVS | TIROS Operational Vertical Sounder |
| TOY | Time Of Year |
| TP | Transaction Processing |
| TP | Test Procedure |
| TP FEM | Two Phase Finite Element Model |
| TPCE | Telemetry Processing Control Environment |
| TPF | Two Phase Flow |
| TPFO | TOPEX Follow-On Flight |
| TPI | Tracks Per Inch |
| TPM | Technical Performance Measurement |
| TPM | Technical Performance Monitoring |
| TPOCC | Transportable Payload Operations Control Center |
| TPS | Test Procedure Report |
| TQCM | Thermoelectric Quartz Crystal Microbalance |
| TQM | Total Quality Management |
| TQSM | Telemetry Quality and Status Monitoring |
| TR | Tape Recorder |
| TR | Transmit Receive |
| TRACE | Tropical Atmospheric Chemistry Experiment |
| TRACE-A | Transport And Chemistry Near the Equator-Atlantic |
| TRACE-B | Transport And Chemistry Near the Equator-Atlantic (2nd) |
| TRACER | Tropospheric Radiometer for Atmospheric Chemistry and Environmental Research |
| TRAGNET | United States Trace Gas Network |
| TRAK | Data Request, Tracking System (NSIDC) |
| TRAMAR | Tropical Rain Mapping Radar |
| TRASYS | Thermal Radiation Analyzer System |
| TRAYSYS | Thermal Radiation Analyzer Program |
| TRB | Test Review Board |
| TRCN | Teacher Resource Center Network |
| TREM | Tropical Rainfall Explorer Mission |
| TRFIC | Tropical Rain Forest Information Center |
| TRIS | Tropical Region Imaging Spectrometer |
| TRK | Tracking |
| TRMM | Tropical Rainfall Measuring Mission (Joint US-Japan) |
| TRR | Test Readiness Review |
| TRR | Test Result Report |
| TRR | Test Requirements Report |
| TRS | Tape Recorder Subsystem |
| TRS | Test Record Sheet |
| TRUST | TDRSS Resource User Support Terminal |
| TRW | Test Readiness Walkthrough |
| TRW | Thompson Ramo-Woolridge |
| TS | Test System |
| TS | Test Surveillance |
| TS | Thermal Subsystem |
| TS | Transport System |
| TS | Thermally and Structurally Representative |
| TS | Transport Subsystem (ECOM) |
| TSA | Time and Space Averaging |
| TSC | Tanegashima Space Center (Japan) |
| TSCA | Toxic Substances Control Act |
| TSDF | Treatment, Storage and Disposal Facility |
| TSDIS | TRMM Science Data and Information System |
| TSF | Thermally, Structurally, and Functionality Representative |
| TSG | Technical Support Group |
| TSI | Total Solar Irradiance |
| TSIM | Total Solar Irradiance Mission |
| TSIWG | Technical Security Implementation Work Group |
| TSN | TRMM Science Network |
| TSP | Twisted Shielded Pair |
| TSS | Telecommunications Standards Sector |
| TSS | Thermal Synthesizer System |
| TSS | TDRSS Service Session |
| TSS | TDRSS Service Summary |
| TSS | EOSDIS TRMM Support System |
| TSS | TRMM Support System |
| TST | TRMM Science Terminal |
| TST | Technology Strategy Team |
| TST | TRMM Science Team |
| TSTOL | TRMM System Test and Operations Language |
| TSU | Tsdis Science User |
| TSU | TRMM Science User |
| TSW | TDRSS Scheduling Window |
| TSWG | TRMM Science Working Group |
| TT | Trouble Ticket |
| TT&C | Telemetry, Tracking, and Command |
| TT&C | Telemetry, Tracking and Control |
| TT-GPTS | Table Top-Ground Power Test Set |
| TTAU | Teletex Access Unit |
| TTC | TT&C Group Equipment Support and Maintenance |
| TTL | Transistor-Transistor Electronics |
| TTM | Time Transfer Message |
| TTR | Trouble Tracking Report |
| TTY | Teletype |
| TURFTS | TDRSS User Radio Frequency Test Set |
| TUT | TDRSS Unscheduled Time |
| TV | Thermal Vacuum |
| TVA | Tennessee Valley Authority |
| TVDB | Test Verification Database |
| TW | Target Week |
| TWP | Tropical Western Pacific Ocean |
| TWT | Traveling Wave Tube |
| TWTA | Traveling Wave Tube Amplifier |
| TWTAS | Traveling Wave Tube Amplifier System |
| TXCO | Temperature Compensated Crystal Oscillator |
| TZD | Total Zenith Delay |
| U | Back to top |
| U/C | Upconverter |
| U/D | Update |
| U/I | User Interface |
| U/L | Uplink |
| UA | User Agent |
| UAM | Urban Airshed Model |
| UARP | Upper Atmosphere Research Program |
| UARS | Upper Atmosphere Research Satellite |
| UAV | Unmanned Aerospace Vehicle |
| UAV | User Antenna View |
| UAV | Uncrewed Aerial Vehicles |
| UBR | Unspecified Bit Rate |
| UC | Upconverter |
| UCE | Unit Check-Out Equipment |
| UCS | Uniform Communications Standard |
| UDB | User Data Base |
| UDF | Unit Development Folder |
| UDP | User Datagram Protocol |
| UDP | User Data Protocol |
| UDP/IP | User Datagram Protocol/Internet Protocol |
| UDSL | Universal DSL |
| UEL | Upper Explosive Limit |
| UFP | Url Filtering Protocol |
| UFS | UNIX File System |
| UHF | Ultra-High Frequency |
| UIA | User Interface Adapter (Or Unit) |
| UIA | Unassigned Integer Arithmetic |
| UID | Universal Identifier |
| UIID | Unique Instrument Interface Document |
| UIL | User Interface Language |
| UIOAR | User Interface Off-Line Analysis Request |
| UIT | User Interface Terminal (ESA) |
| UKMO | United Kingdom Meteorological Office |
| UL | Upper Left |
| UMAC | Upper Midwest Aerospace Consortium |
| UML | Universal Modeling Language |
| UMTS | Universal Mobile Telecommunications System |
| UN/ECE | United Nations Economic Commission for Europe |
| UNCED | United Nations Conference on Environment and Development |
| UNEP | United Nations Environmental Programme |
| UNESCO | United Nations Educational Scientific and Cultural Organization |
| UNI | User Network Interface |
| UNICOS | Unix Cray Operating System |
| UOS | User Operations Support |
| UPD | User Performance Data |
| UPDM | User Performance Data Message |
| UPDR | User Performance Data Request |
| UPM | User Performance Message |
| UPN | Unique Project Identifier |
| UPS | Uninterruptable Power Supply |
| UPS | Uninterruptable Processing System |
| UPS | User Planning System |
| UPS | User Profile System |
| UQPSK | Unbalanced Quadriphase Shift Key/Keying |
| UR | Universal Reference |
| UR | User Requirement |
| UR | Upper Right |
| UR/PT | User Registration/Profile Tool |
| URD | User Requirements Document |
| URDB | User Registration Database |
| URDB | User Recommendation Database |
| URF | User Request File |
| URFA | User Request File Acknowledgment |
| URISA | Urban and Regional Information Systems Association |
| URN | Uniform Resource Name |
| URS | User Registration System (EOSDIS) |
| URT | User Registration Tool |
| US | User Station |
| USB | Universal Serial Bus |
| USCCS | User Spacecraft Clock Calibration System |
| UserDIS | User Data Information System |
| USGCRP | U.S. Global Change Research Program |
| USM | User Schedule Message |
| USN | Universal Space Network |
| USO | User Support Office |
| USO | Ultra Stable Oscillator |
| USRA | University Space Research Associates |
| USS | User Services Subsystem |
| USS | User Services System |
| UT | Umbilical Tower |
| UT | Universal Time |
| UT | Upper Troposphere |
| UT | Unit Testing |
| UTC | Coordinated Universal Time |
| UTCF | Universal Time Correlation Factor |
| UTDF | Universal Tracking Data Format |
| UTH | Upper Tropospheric Humidity |
| UTM | Universal Transverse Mercator |
| UTMC | Universal Time Master Clock |
| UTP | Unshielded Twisted-Pair |
| UU | Unencoded/Decode |
| UUID | Universal Unique Identifier |
| UUT | Unit Under Test |
| UV | Ultraviolet |
| UV | Under Voltage |
| UV | Ultra Violet |
| UV-B | Ultraviolet-B |
| UV1 | 1st Ultra Violet (Channel) |
| UV2 | 2nd Ultra Violet (Channel) |
| UVISI | Ultraviolet and Visible Imagers and Spectrographic Imagers |
| UVn | Under Voltage level n |
| UWG | Users Working Group |
| UWG | Utilities Working Group |
| UX | Unix/X |
| V | Back to top |
| V&H | Vertical and Horizontal |
| V&V | Verification and Validation |
| V/O | Visualization Option |
| V/T | Voltage Temperature (charge curve) |
| V0 GTWY | Version Zero Gateway |
| V0 ODL | Version 0 Object Description Language |
| V0.1 - 4 | Version 0.1 - 4 |
| VAFB | Vandenberg Air Force Base |
| VAN | Value-Added Network |
| VAP | Value Added Provider |
| VAR | Value-Added Reseller |
| VAS | Vissr Atmospheric Sounder (GOES) |
| VAT | Verification Acceptance Test |
| VATC | Verification and Acceptance Test Center (Raytheon @ Landover) |
| VAX | Virtual Extended Address |
| VBD | Vector Borne Disease |
| vBNS | very high-speed Backbone Network Service |
| VBR | Variable Bit Rate |
| VBR-NRT | Variable Bit Rate - Non Real Time |
| VBR-RT | Variable Bit Rate - Real Time |
| VC | Virtual Channel |
| VC-ID | Virtual Channel Identifier |
| VCATS | Vendors Costing and Tracking System (ECS) |
| VCC | Virtual Channel Connection |
| VCC | Vehicle Command Count |
| VCC | Vegetative Cover Conversion |
| VCDU | Virtual Channel Data Unit |
| VCDU-ID | VCDU Identifier |
| VCF | Vegetation Continuous Fields |
| VCGW | Virtual Channel Gateway |
| VCHP | Variable Conductance Heat Pipe |
| VCI | Virtual Channel Identifier |
| VCID | Virtual Channel Identification |
| VCL | Vegetation Canopy Lidar |
| VCM | Volatile Condensable Materials |
| VCP | Virtual Control Panel |
| VCR | Video Cassette Recorder |
| VCRI | Verification Cross Reference Index |
| VCRM | Verification Cross Reference Matrix |
| VCST | VIIRS Calibration Support Team |
| VC_PDU | Virtual Channel (Protocol) Data Unit |
| VDA | Vacuum Deposited Aluminum |
| VDB | Verification Database |
| VDC | Volts, Direct Current |
| VDC | Visual Database Cookbook |
| VDD | Version Description Document |
| VDE | Valve Drive Electronics |
| VDS | Voice and Data System |
| VDS | Vehicle Dynamics Simulation |
| VDSL | Very high-data-rate DSL |
| VDSL | Voice Distribution System |
| VDT | Video Display Terminal |
| VEM | Vibro Elastic Material (Damping Treatment) |
| VEMAP | Vegetation/Ecosystem Modeling and Analysis Project |
| VFD | Very Fast Delivery |
| VFS | Virtual File System |
| VGA | Video Graphics Adapter (IBM) |
| VHF | Very High Frequency |
| VHRR | Very High Resolution Radiometer |
| VHS | Vertical Head Synchronization |
| VHS | VME High-Rate Subsystem |
| VHSIC | Very High Speed Integrated Circuit |
| VI | Vegetation Index |
| VIC | Vehicle Identification Code |
| VIC | Variable Infiltration Capacity |
| VID | Vehicle Identification Number |
| VIIRS | Visible Infrared Imaging Radiometer Suite |
| VIMS | Virtual IMS |
| VIP | Versatile Interface Processor |
| VIRGO | Variability of Solar Irradiance and Gravity Oscillations |
| VIRR | Visible and Infrared Radiometer |
| VIRS | Visible Infrared Scanner (TRMM) |
| VIRSR | Visible Infrared Scanning Radiometer |
| VIS | Vendor Information System |
| VIS-UV | Visible/Ultraviolet Spectrometer |
| VIS/IR | Visible/Infrared |
| VISSR | Visible/Infrared Spin-Scan Radiometer (GOES) |
| VLAN | Virtual Local Area Network |
| VLBI | Very Long Baseline Interferometry |
| VLDB | Very Large Database |
| VLINK | Visited Link (HTML) |
| VLIW | Very Long Instruction Word |
| VLM | Very Large Memory |
| VLS | Vandenburg Launch Site |
| VLS | VME Low-Rate Subsystem |
| VLSI | Very Large Scale Integration |
| VM | Virtual Machine |
| VM | Virtual Memory |
| VME | Versa Module Eurocard |
| VMIC | VME Microsystems International Corp (Company) |
| VML | Vibration Monitor Limiter |
| VML | Vector Markup Language |
| VMR | Volume Mixing Ratio |
| VMS | Virtual Memory System |
| VN | Verified Near-Term |
| VNIR | Visible and Near Infrared |
| VOB | Version Object Base |
| VOC | Volatile Organic Compounds |
| VOC | Voltage Open Circuit |
| VOC | Volatile Organic Carbon |
| VOD | Video-On-Demand |
| VoIP | Voice Over IP |
| VOLCAM | Volcanic Ash Mission |
| VOM | Volt Ohm Meter |
| VOTE | Vortex Ozone Transport Experiment |
| VOTE/TOTE | Vortex Ozone Transport Experiment/Tropical Ozone Transport Experiment |
| VP | Verification Plan |
| VP | Virtual Path |
| VP/VC | Virtual Path, Virtual Channel |
| VPF | Vector Product Format |
| VPI | Virtual Path Identifier |
| VPN | Virtual Private Network |
| VRAM | Video Random Access Memory |
| VRML | Virtual Reality Modeling Language |
| VS | Verification Specification |
| VSAM | Virtual Storage Access Method |
| VSAR | Variable Synthetic Aperture Radar |
| VSAT | Very Small Aperture Terminal |
| VSIO | Very High Speed Serial Interface |
| VSS | Voice Switching System |
| VT | Virtual Terminal |
| VT | Verification Test |
| VTCW | Vehicle Time Code Word |
| VTIR | Visible and Thermal Infrared Radiometer |
| VTP | Virtual Terminal Protocol |
| VTRS | Vandenberg Telemetry Receiver Site |
| VTS | Virtual Terminal Service |
| VUE | Visible-Light/Ultraviolet Experiment |
| VVRM | Verification and Validation Requirements Matrix |
| VW | Verified With Workaround |
| VXI | VME Bus Extension for Instrumentation (Extension of VME) |
| VXR | Visible Transfer Radiometer |
| W | Back to top |
| WA | Working Agreement |
| WAD | Work Authorization Document |
| WAIS | Wide Area Information Server |
| WAN | Wide Area Network |
| WAP | Wireless Access Protocol |
| WASDE | World Agricultural Supply and Demand Estimates |
| WB | Wideband |
| WBDCS | Wide Band Data Collection System |
| WBDT | Wide Band Downlink Transmitter |
| WBEM | Web-Based Enterprise Management |
| WBS | Work Breakdown Structure |
| WBVT | Wide Band Video Tape |
| WC | Wls Calibration |
| WCOM | Worldcom |
| WCRP | World Climate Research Program (Combined ocean-atmosphere research experiment) |
| WCS | White Sands Complex |
| WCSC | Western Commercial Space Center |
| WDC | World Data Center |
| WDE | Wheel Drive Electronics |
| WDETI | Workforce Development Education and Training Initiative |
| WDM | Wavelength Division Multiplexing |
| WDOG | Watchdog Timer (see also WDT) |
| WDS | Watch Dog Sequencer |
| WDT | Watch Dog Timer |
| WDT-O | Watch Dog Time-Out |
| WEFAX | Weather Facsimile (Via Geosynchronous Weather Satellites) |
| WEGENER | Working Group of European Geoscientists for the Establishment of Networks for Earthquake Research |
| WEPOLWX-81 | Weddell Polyna Experiment |
| WETNET | Network for Distribution and Joint Analysis of SSM/I Data (MSFC) |
| WFC | Visible Wide-Field Camera |
| WFF | Wallops Flight Facility |
| WfMC | Workflow Management Coalition |
| WFOV | Wide Field Of View |
| WFPC | Wide Field Planetary Camera |
| WFPS | Water-Filled Pore Space |
| WG | Working Group |
| WGD | Working Group on Data (CEOS) |
| WGGCR | Working Group on Global Change Research |
| WGISS | Working Group on Information Systems and Services |
| WGNE | Working Group on Numerical Experimentation (WCRP) |
| WGS | Wallops Ground System (EPGS and WPS) Designator for All Orbital Tracking Resources Located At GSFC/WFF |
| WGS | Wallops Ground Station |
| WGS | World Geodetic Survey |
| WGS84 | World Geodetic System 1984 |
| WHOI | Woods Hole Oceanographic Institute |
| WHOM | Web-based Hierarchical Ordering Mechanism |
| WIL | Weilheim Ground Station |
| WINDII | Wind Imaging Interferometer |
| WINTEL | Microsoft Windows and Intel-Compatible |
| WIPO | World Intellectual Property Organization |
| WIRE | Wide-Field Infrared Explorer |
| WKSHCI | Working Storage Hardware Configuration Item |
| WKSHW | Working Storage Hardware |
| WLL | Wireless Local Loop |
| WLS | White Light Source |
| WMO | World Meteorological Organization |
| WMON | Wavelength Monitor |
| WMS | Web Map Service |
| WMTS | Web Map Tile Service |
| WN | Window Channel Radiometric Data |
| WOCE | World Ocean Circulation Experiment |
| WOTIS | White Sands Orbital Tracking Information System |
| WOTS | Wallops Orbital Tracking Station (Obsolete Term) |
| WOW | Weight On Wheels |
| WP | White Paper |
| WP | Work Package |
| WP-ESIP | Working Prototype - Earth Science Information Partner |
| WPL | Wave Propagation Laboratory (NOAA) |
| WPS | Designator for All Orbital Tracking Resources Located At GSFC/WFF |
| WPS | Wallops Ground Station |
| WQRC | Water Quality Conservation Board |
| WR | Western Range |
| WR | Work Requests |
| WRKSTN | Workstation |
| WRR | Western Range Regulations |
| WRS | Worldwide Reference System |
| WS | Working Storage |
| WSC | White Sands Complex |
| WSG | Wallops Scheduling Group |
| WSGT | White Sands Ground Terminal |
| WSGTU | White Sands Ground Terminal Upgrade |
| WSMC | Western Space and Missile Center |
| WSMC | Western Space Missile Command |
| WSP | Web Standards Project |
| WSR | Weather Surveillance Radar |
| WTF | WGISS Test Facility |
| WTI | Warehouse Technology Initiative |
| WTR | Western Test Range |
| WTS | Wallops Tracking Station |
| WVR | Water Vapor Radiometer |
| WWW | World Weather Watch |
| WYSIWYG | What You See Is What You Get |
| X | Back to top |
| X-Band CTV | X-Band Compatibility Test Van (JPL van used to verify X-Band compatibility) |
| X-SAR | X-Band Synthetic Aperture Radar |
| X.400 | OSI Standard for Mail Services |
| X.500 | OSI Standard for Directory Services |
| XA | X/Open API |
| xAR | X Acquisition Request (Where X is a generic acquisition request) |
| XBDS | Bulk Data Service Protocol |
| XBT | Expendable Bathythermograph |
| XDR | External Data Representation |
| XDR | External Data Format |
| XDS | X/Open Directory Service |
| XF | Transfer Frame |
| XF | Transformer (Used on 1553B Interface) |
| XFG | Transfer Frame Generator |
| XFN | X/Open Federated Naming |
| XFS | Extended File System |
| XHTML | Extensible Hyper Text Markup Language |
| XIE | X-Ray Imaging Experiment |
| XLFD | X Logical Font Description (X Window System) |
| XLink | Extensible Link Language (Xll) |
| XLL | Extensible Link Language |
| XMI | XML Metadata Interchange Format (IBM, Unisys) |
| XML | eXtensible Markup Language |
| XML-QL | XML Query Language |
| XMM | X-Ray Multi Mirror |
| XMP | X/Open Management Protocol |
| XOM | X/Open Osi-Abstract-Data Manipulation |
| XPointer | XML Pointer Language (Addressing Scheme, See Also XLL) |
| XPS | Xuv Photometer System |
| XRS | X-Ray Spectrometer |
| XSL | Extensible Style Language |
| XSLP | Xsl Processor |
| XTE | X-Ray Timing Explorer |
| XTRR | External Interface Test Readiness Review |
| XTX | X-Band Transmitter Assembly |
| Y | Back to top |
| YGC | Yaw Gyro Compassing |
| YH | Yellow High |
| YL | Yellow Low |
| YTD | Year To Date |
| Z | Back to top |
| ZBR | Zero-Based Review |
| ZIF | Zero Insertion Force |
