NASA's Crustal Dynamics Data Information System (CDDIS) archives data products provided by the the Global Differential Global Positioning System (GDGPS), a real-time Global Navigation Satellite System (GNSS) monitoring and augmentation system designed to improve the positioning and timing accuracy provided by operational GPS.
Description
This product contains file names and URLs to files containing antenna phase map data used in the real-time GNSS POD processing. In particular, the IGS ANTEX file name used for the processing is provided. Additional meta data items may include information that identifies the real-time filter source populating the GNSS real-time precise orbit determination (POD) products (see "pos", "quat", "tdp", and "_hr.tdp" products). The product is generated at NASA's Jet Propulsion Laboratory (JPL) Global Differential GPS Operations Centers.
Data Access
JPL GDGPS antenna phase maps meta data products are online as GPS products, GLONASS products, and Galileo products in subdirectories by year and day.
Format
| File Naming Convention | YYYY/JJJ/SS/C_YYYY-MM-DD_JJJ_SSI.meta.gz |
|---|
File Name Codes
| Code | Meaning | |
|---|---|---|
| YYYY | 4-digit year | |
| JJJ | 3-digit day of year | |
| SS | 2-character source identifier (e.g., "dn" or "oc") | |
| C | GNSS constellation | |
| G | GPS (doi:10.5067/GNSS/GDGPS_ant_phase_map_meta_gps_001) | |
| R | GLONASS (doi:10.5067/GNSS/GDGPS_ant_phase_map_meta_glo_001) | |
| E | Galileo (doi:10.5067/GNSS/GDGPS_ant_phase_map_meta_gal_001) | |
| MM | 2-digit month | |
| DD | 2-digit month | |
| I | 1-digit refinement of product source identifier (e.g., "1", "2") | |
| gz | gzipped file | |
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