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 a time series of Earth orientation parameters from the IERS Bulletin A for the GPS, GLONASS, and Galileo satellite constellations. The product is generated at NASA's Jet Propulsion Laboratory (JPL) Global Differential GPS Operations Centers.
Data Access
JPL GDGPS Earth orientation parameters 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.eo.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") | |
| MM | 2-digit month | |
| DD | 2-digit day | |
| C | GNSS constellation | |
| G | GPS (doi:10.5067/GNSS/GDGPS_daily_eop_gps_001) | |
| R | GLONASS (doi:10.5067/GNSS/GDGPS_daily_eop_glo_001) | |
| E | Galileo (doi:10.5067/GNSS/GDGPS_daily_eop_gal_001) | |
| I | 1-digit refinement of product source identifier (e.g., "1", "2") | |
| gz | gzipped file | |
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