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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
Ground-Based Global Navigation Satellite System (GNSS)-based Upper Atmospheric Realtime Disaster Information and Alert Network (GUARDIAN) GLONASS Earth Orientation Parameters (1-day sampling, 7-day files) from NASA CDDIS 1 GLONASS, GROUND STATIONS GNSS RECEIVER 2023-10-01

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

JPL GEOP (ASCII)
Ground-Based Global Navigation Satellite System (GNSS)-based Upper Atmospheric Realtime Disaster Information and Alert Network (GUARDIAN) GPS daily antenna phase maps (meta data, 24-hour files) from NASA CDDIS 1 GPS, GROUND STATIONS 2023-10-01

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

JPL MetaFile (ASCII)
Ground-Based GNSS-based Upper Atmospheric Realtime Disaster Information and Alert Network (GUARDIAN) Galileo daily accumulated real-time Precise Orbit Determination (POD) orbits (60-second sampling, 24-hour files) from NASA CDDIS 1 GLONASS, GROUND STATIONS 2023-10-01

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

JPL pos-GOA (ASCII)
Global Navigation Satellite System (GNSS) IGS Rapid Combined Orbit Solution (daily files, generated daily) Product from NASA CDDIS 1 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

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

extended standard product-3 (SP3c)
Global Navigation Satellite System (GNSS) IGS Final Combined Satellite and Receiver Clock Solution (5 minute resolution, daily files, generated weekly) product from NASA CDDIS 1 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

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

clock RINEX format
Ground-Based Global Navigation Satellite System (GNSS) Hatanaka-compressed Observation Data (1-second sampling, sub-hourly files) from NASA CDDIS 1 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

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

RINEX
Very Long Baseline Interferometry (VLBI) Tropospheric Parameters (TROP) products from NASA CDDIS 1 GROUND STATIONS VLBI Station 2001-12-30 to Present

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

EOP Transfer Format
Very Long Baseline Interferometry (VLBI) Auxiliary Files from NASA CDDIS 1 GROUND-BASED OBSERVATIONS VLBI Station 2005-01-01

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

ASCII
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
General Archive Information from NASA CDDIS 1 GROUND STATIONS GNSS, SLR Station, VLBI Station, DORIS GROUND STATION BEACON 1976-01-01 to Present

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

ASCII
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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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