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Description

This dataset consists of ground-based Global Navigation Satellite System (GNSS) Mixed Broadcast Ephemeris Data (daily files) from the NASA Crustal Dynamics Data Information System (CDDIS). GNSS provide autonomous geo-spatial positioning with global coverage. GNSS data sets from ground receivers at the CDDIS consist primarily of the data from the U.S. Global Positioning System (GPS) and the Russian GLObal NAvigation Satellite System (GLONASS). Since 2011, the CDDIS GNSS archive includes data from other GNSS (Europe’s Galileo, China’s Beidou, Japan’s Quasi-Zenith Satellite System/QZSS, the Indian Regional Navigation Satellite System/IRNSS, and worldwide Satellite Based Augmentation Systems/SBASs), which are similar to the U.S. GPS in terms of the satellite constellation, orbits, and signal structure. The daily GNSS broadcast ephemeris files contain one hour of mixed multi-GNSS navigation (30-second sampling) data in RINEX format from a global permanent network of ground-based receivers, one file per site.

Product Summary

Platforms
Beidou,
GLONASS,
GPS,
GROUND STATIONS,
Galileo,
IRNSS,
QZSS,
SBAS
Instruments
Beidou P,
GLONASS P,
GNSS RECEIVER,
GPSP,
Galileo P,
IRNSS P,
QZSS P,
SBAS P
Spatial Extent
N: 90 S: -90 E: 180 W: -180
Geographic Region
GLOBAL
Coordinate System
CARTESIAN
Granule Spatial Representation
CARTESIAN
Temporal Extent
1992-01-01 to Present
Data Partner
Crustal Dynamics Data Information System, Geodesy and Geophysics Laboratory, Earth Sciences Division, Sciences and Exploration Directorate, Goddard Space Flight Center, NASA (CDDIS)
Concept ID
c1604132128-cddis
Data State
ACTIVE
Processing Level
1A
Published

Citation

Citation is critically important for dataset documentation and discovery. This dataset is openly shared, without restriction, in accordance with the EOSDIS Data Use and Citation Guidance.

Copy Citation

International GNSS Service (IGS). (2015). Hourly 30-second mixed broadcast ephemeris data [Data set]. NASA Crustal Dynamics Data Information System. https://doi.org/10.5067/GNSS/GNSS_HOURLY_X_001 Date Accessed: 2025-06-25

Additional Citation

International GNSS Service, Hourly 30-second mixed broadcast ephemeris data, Greenbelt, MD, USA:NASA Crustal Dynamics Data Information System (CDDIS), Accessed [[enter user data access date]] at doi:10.5067/GNSS/gnss_hourly_x_001

File Naming Convention

YYYY/DDD/HH/XXXXMRCCC_K_YYYYDDDHHMM_01H_MN.rnx.gz

Documents

GENERAL DOCUMENTATION URL for more information about GNSS daily mixed broadcast navigation data

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