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 attitude quaternion components for healthy satellites in the GNSS constellation that are accumulated every minute throughout the day. The product is generated at NASA's Jet Propulsion Laboratory (JPL) Global Differential GPS Operations Centers in real-time. The data in this product can be concatenated with other daily products to provide larger coverage in time.
Data Access
JPL GDGPS daily accumulated real-time GPS precise orbit determination (POD) attitude quaternions 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_RRR.quat.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_daily_POD_att_quats_gps_001) | |
| R | GLONASS (doi:10.5067/GNSS/GDGPS_daily_POD_att_quats_glo_001) | |
| E | Galileo (doi:10.5067/GNSS/GDGPS_daily_POD_att_quats_gal_001) | |
| MM | 2-digit month | |
| DD | 2-digit day | |
| I | 1-digit refinement of product source identifier (e.g., "1", "2") | |
| RRR | 3-digit sampling interval in seconds (e.g., "001" for 1 sec data, "030" for 30 sec data, etc.) | |
| gz | gzipped file | |
Explore the documentation about this product.