We are in the process of migrating all NASA Earth science data sites into Earthdata from now until end of 2026. Not all NASA Earth science data and resources will appear here until then. Thank you for your patience as we make this transition.
Read about the Web Unification Project
Global Coordinate Reference System Data Access and Tools
Global Coordinate Reference System Datasets
| Dataset | Platforms | Instruments | Temporal Extent | Location Keywords | Spatial Extent | Data Format |
|---|---|---|---|---|---|---|
| GNSS GLONASS Combined Broadcast Ephemeris Data (30-second sampling, daily files) from NASA CDDIS | GLONASS, GROUND STATIONS | GLONASS P, GNSS | 1992-01-01 to Present | GLOBAL | N: 90 S: -90 E: 180 W: -180 | RINEX |
| Combined GPS Broadcast Ephemeris Data (30-second sampling, hourly files) from NASA CDDIS | Beidou, Galileo, GLONASS, GPS, GROUND STATIONS, QZSS, IRNSS, SBAS | Beidou P, Galileo P, GLONASS P, GPSP, GNSS, QZSS P, IRNSS P, SBAS P | 1992-01-01 to Present | GLOBAL | N: 90 S: -90 E: 180 W: -180 | RINEX |
| Doppler Orbitography and Radiopositioning Integrated by Satellite (DORIS) Data and Products Supporting Information from NASA CDDIS | OSTM/JASON-2, GROUND STATIONS, CRYOSAT-2, Sentinel-3A, SARAL, HY2-A, JASON-3 | DORIS, DORIS GROUND STATION BEACON | 1992-01-01 to Present | GLOBAL | N: 90 S: -90 E: 180 W: -180 | ASCII |
| Doppler Orbitography and Radiopositioning Integrated by Satellite (DORIS) RINEX Data from NASA CDDIS | GROUND STATIONS | 2003-01-22 to Present | N: 90 S: -90 E: 180 W: -180 | RINEX | ||
| Earth Orientation Parameters (EOP) products from the International Earth Rotation and Reference Systems Service (IERS) Rapid Service Prediction Center (RSPC) at the US Naval Observatory (USNO, updated sub-daily) from NASA CDDIS | SATELLITES | VLBI, SLR, GPS, DORIS | 1973-01-01 to Present | GLOBAL | N: 90 S: -90 E: 180 W: -180 | eop |
| General Archive Information from NASA CDDIS | GROUND STATIONS | GNSS, SLR Station, VLBI Station, DORIS GROUND STATION BEACON | 1976-01-01 to Present | GLOBAL | N: 90 S: -90 E: 180 W: -180 | ASCII |
| Global Navigation Satellite System (GNSS) Data and Products Support Information from NASA CDDIS | Beidou, Galileo, GLONASS, GPS, GROUND STATIONS, QZSS, IRNSS, SBAS | Beidou P, Galileo P, GLONASS P, GPSP, GNSS RECEIVER, QZSS P, IRNSS P, SBAS P | 1992-01-01 to Present | GLOBAL | N: 90 S: -90 E: 180 W: -180 | ASCII |
| Global Navigation Satellite System (GNSS) IGS Analysis Center (AC) Final Orbit/Reference Frame Product from NASA CDDIS | Beidou, Galileo, GLONASS, GPS, GROUND STATIONS, QZSS, IRNSS, SBAS | Beidou P, Galileo P, GLONASS P, GPSP, GNSS, QZSS P, IRNSS P, SBAS P | 1992-01-01 to Present | GLOBAL | N: 90 S: -90 E: 180 W: -180 | RINEX |
| Global Navigation Satellite System (GNSS) IGS Analysis Center (AC) Final Station Positions/Velocities Product from NASA CDDIS | Beidou, Galileo, GLONASS, GPS, GROUND STATIONS, QZSS, IRNSS, SBAS | Beidou P, Galileo P, GLONASS P, GPSP, GNSS, QZSS P, IRNSS P, SBAS P | 1992-01-01 to Present | GLOBAL | N: 90 S: -90 E: 180 W: -180 | SINEX |
| Global Navigation Satellite System (GNSS) IGS Analysis Center (AC) Ionosphere Vertical Total Electron Content (VTEC) Product from NASA CDDIS | Beidou, Galileo, GLONASS, GPS, GROUND STATIONS, QZSS, IRNSS, SBAS | Beidou P, Galileo P, GLONASS P, GPSP, GNSS, QZSS P, IRNSS P, SBAS P | 1998-01-01 to Present | GLOBAL | N: 90 S: -90 E: 180 W: -180 | IONEX |
SHOWING 10 OF 171
Frequently Asked Questions
Earthdata Forum
Our online forum provides a space for users to browse thousands of FAQs about research needs, data, and data applications. You can also submit new questions for our experts to answer.
Submit Questions to Earthdata Forumand View Expert Responses