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Geodetics Data Access and Tools

NASA has geodetics datasets that help researchers characterize the shape of Earth and the motion of its components. Access a range of data and data tools such as AppEEARS, Worldview, and Giovanni to make the most of geodetics data.

Geodetics Datasets

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Dataset Version Platforms Instruments Temporal Extent Spatial Extent Spatial Resolution Data Format
Global Navigation Satellite Systems (GNSS) Ultra-Rapid Orbit Products from NASA CDDIS 1 GLONASS, GPS GLONASS, GPS 2000-09-17 to Present

N: 90 S: -90 E: 180 W: -180

Global Very Long Baseline Interferometry (VLBI) Terrestrial Reference Frame (TRF) solution products from NASA CDDIS 1 GROUND STATIONS 2003-07-11 to 2023-10-16

N: 90 S: -90 E: 180 W: -180

SINEX
GRACE/GRACE-FO Level-4 Monthly Gravitational-Rotational-Deformation version 01 from NASA MEaSUREs HOMaGE 1.0 GRACE-FO, GRACE GRACE-FO MWI, GRACE INTERFEROMETER 2002-04-16 to Present

N: 90 S: -90 E: 180 W: -180

0.5 Decimal Degrees x 0.5 Decimal Degrees netCDF-4
Ground-Based Doppler Orbitography and Radiopositioning Integrated by Satellite (DORIS) Cumulative Station Position Product from NASA CDDIS 1 OSTM/JASON-2, GROUND STATIONS, CRYOSAT-2, Sentinel-3A, SARAL, HY2-A, JASON-3, ENVISAT, TOPEX/POSEIDON, JASON-1, SPOT-2, SPOT-3, SPOT-4, SPOT-5 DORIS, DORIS GROUND STATION BEACON 1992-01-01 to Present

N: 90 S: -90 E: 180 W: -180

SINEX
Ground-Based Doppler Orbitography and Radiopositioning Integrated by Satellite (DORIS) Extension of the International Terrestrial Reference Frame (ITRF) for Precise Orbit Determination (DPOD) from NASA CDDIS 1 OSTM/JASON-2, GROUND STATIONS, CRYOSAT-2, Sentinel-3A, SARAL, HY2-A, JASON-3, ENVISAT, TOPEX/POSEIDON, JASON-1, SPOT-2, SPOT-3, SPOT-4, SPOT-5 DORIS, DORIS GROUND STATION BEACON 1992-01-01 to Present

N: 90 S: -90 E: 180 W: -180

IDS internal DPOD format
Ground-Based Doppler Orbitography and Radiopositioning Integrated by Satellite (DORIS) IDS Coordinates of the Terrestrial Reference Frame (TRF) origin (Geocenter) Time Series Product from NASA CDDIS 1 OSTM/JASON-2, GROUND STATIONS, CRYOSAT-2, Sentinel-3A, SARAL, HY2-A, JASON-3, ENVISAT, TOPEX/POSEIDON, JASON-1, SPOT-2, SPOT-3, SPOT-4, SPOT-5, Sentinel-3B DORIS, DORIS GROUND STATION BEACON 1992-01-01 to Present

N: 90 S: -90 E: 180 W: -180

Geocenter
Ground-Based Doppler Orbitography and Radiopositioning Integrated by Satellite (DORIS) IDS Earth Orientation Parameters (EOP) Time Series Product from NASA CDDIS 1 GROUND-BASED OBSERVATIONS DORIS 1992-01-01 to Present

N: 90 S: -90 E: 180 W: -180

EOP
Ground-Based Doppler Orbitography and Radiopositioning Integrated by Satellite (DORIS) IDS Ionospheric Product from NASA CDDIS 1 GROUND STATIONS, ENVISAT, TOPEX/POSEIDON, JASON-1, SPOT-2, SPOT-4, SPOT-5, Sentinel-3B DORIS GROUND STATION BEACON, DORIS 1992-01-01 to Present

N: 90 S: -90 E: 180 W: -180

SINEX
Ground-Based Doppler Orbitography by Radiopositioning Integrated on Satellite (DORIS) Daily Data (raw files) from NASA CDDIS 1 OSTM/JASON-2, GROUND STATIONS, CRYOSAT-2, Sentinel-3A, SARAL, HY2-A, JASON-3 DORIS, DORIS GROUND STATION BEACON 1992-01-01 to Present

N: 90 S: -90 E: 180 W: -180

RINEX DORIS 3.0
Ground-Based Doppler Orbitography by Radiopositioning Integrated on Satellite (DORIS) IDS Global SINEX Station Position Time Series Product from NASA CDDIS 1 OSTM/JASON-2, GROUND STATIONS, CRYOSAT-2, Sentinel-3A, SARAL, HY2-A, JASON-3, ENVISAT, TOPEX/POSEIDON, JASON-1, SPOT-2, SPOT-3, SPOT-4, SPOT-5 DORIS, DORIS GROUND STATION BEACON 1992-01-01 to Present

N: 90 S: -90 E: 180 W: -180

IDS STCD (Station Coordinates Difference) format
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Featured Geodetics Observation Method: GNSS
A Global Navigation Satellite System (GNSS) is a space geodesy technology that provides autonomous geospatial positioning around the world. One such system is the U.S. Global Positioning System (GPS), which is made up of 24 satellites, each traveling in a 12-hour orbit. A similar system is the GLObal NAvigation Satellite System (GLONASS) constellation consisting of 24 satellites. Each system is designed so that multiple satellites are within range of any point on Earth in order to precisely determine its location.

GNSS data can used to determine location and positioning around Earth as well as to study geophysics, the motions of tectonic plates and their displacements due to earthquakes, Earth orientation, and atmospheric properties among many other things.
Learn More About GNSS
image collage of satellite data images of Earth

GNSS Radio Occultation Science and Applications

Join us to learn more about Global Navigation Satellite System (GNSS) radio occultation science and applications! We will highlight science impacts in the areas of numerical weather prediction, forecasting cyclone genesis, and space weather.
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RINEX V3 GNSS Data Now Available at CDDIS

This update to NASA's Crustal Dynamics Data Information System (CDDIS) archive makes accessing all RINEX data easier and more transparent for the Global Navigation Satellite System (GNSS) user community.

Geodetics Data Tools

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Tool Description Services
Earthdata Search Earthdata Search enables data discovery, search, comparison, visualization, and access across NASA’s Earth science data holdings. Search and Discovery, Access, Cataloging, Cloud Computing, Downloading
Worldview Worldview offers the capability to interactively browse over 1,200 global, full-resolution satellite imagery layers and download the underlying data. Analysis, Search and Discovery, Visualization, Access, Comparison, Monitoring Natural Events
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