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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 Data Tools

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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.
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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 Datasets

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Dataset Platforms Instruments Temporal Extent Location Keywords Spatial Extent Data Format
Ground-Based GNSS-based Upper Atmospheric Realtime Disaster Information and Alert Network (GUARDIAN) GLONASS daily accumulated real-time Precise Orbit Determination (POD) Attitude Quaternions (30-second sampling, 24-hour files) from NASA CDDIS GLONASS, GROUND STATIONS 2023-10-01 GLOBAL N: 90 S: -90 E: 180 W: -180 JPL Quaternions (ASCII)
Ground-Based GNSS-based Upper Atmospheric Realtime Disaster Information and Alert Network (GUARDIAN) GLONASS daily accumulated real-time Precise Orbit Determination (POD) Clock Corrections (1-second sampling, 24-hour files) from NASA CDDIS GLONASS, GROUND STATIONS GNSS RECEIVER 2023-10-01 GLOBAL N: 90 S: -90 E: 180 W: -180 JPL Time Dependent Parameter (ASCII)
Ground-Based GNSS-based Upper Atmospheric Realtime Disaster Information and Alert Network (GUARDIAN) GLONASS daily accumulated real-time Precise Orbit Determination (POD) Clock Corrections (60-second sampling, 24-hour files) from NASA CDDIS GLONASS, GROUND STATIONS GNSS RECEIVER 2023-10-01 GLOBAL N: 90 S: -90 E: 180 W: -180 JPL Time Dependent Parameter (ASCII)
Ground-Based GNSS-based Upper Atmospheric Realtime Disaster Information and Alert Network (GUARDIAN) GLONASS daily accumulated real-time Precise Orbit Determination (POD) orbits (60-second sampling, 24-hour files) from NASA CDDIS GPS, GROUND STATIONS 2023-10-01 GLOBAL N: 90 S: -90 E: 180 W: -180 JPL pos-GOA (ASCII)
Ground-Based GNSS-based Upper Atmospheric Realtime Disaster Information and Alert Network (GUARDIAN) GPS daily accumulated real-time Precise Orbit Determination (POD) Attitude Quaternions (30-second sampling, 24-hour files) from NASA CDDIS GPS, GROUND STATIONS 2023-10-01 GLOBAL N: 90 S: -90 E: 180 W: -180 JPL Quaternions (ASCII)
Ground-Based GNSS-based Upper Atmospheric Realtime Disaster Information and Alert Network (GUARDIAN) GPS daily accumulated real-time Precise Orbit Determination (POD) Clock Corrections (1-second sampling, 24-hour files) from NASA CDDIS GPS, GROUND STATIONS 2023-10-01 GLOBAL N: 90 S: -90 E: 180 W: -180 JPL Time Dependent Parameter (ASCII)
Ground-Based GNSS-based Upper Atmospheric Realtime Disaster Information and Alert Network (GUARDIAN) GPS daily accumulated real-time Precise Orbit Determination (POD) Clock Corrections (60-second sampling, 24-hour files) from NASA CDDIS GPS, GROUND STATIONS 2023-10-01 GLOBAL N: 90 S: -90 E: 180 W: -180 JPL Time Dependent Parameter (ASCII)
Ground-Based GNSS-based Upper Atmospheric Realtime Disaster Information and Alert Network (GUARDIAN) GPS daily accumulated real-time Precise Orbit Determination (POD) orbits (60-second sampling, 24-hour files) from NASA CDDIS GPS, GROUND STATIONS 2023-10-01 GLOBAL N: 90 S: -90 E: 180 W: -180 JPL pos-GOA (ASCII)
Ground-Based Meteorological Data (daily, 24 hour files) from Co-Located Global Navigation Satellite System (GNSS) Receivers from NASA CDDIS Beidou, Galileo, GLONASS, GPS, GROUND STATIONS, QZSS, IRNSS, SBAS Beidou P, Galileo P, GLONASS P, GPSP, GNSS RECEIVERS, QZSS P, IRNSS P, SBAS P 1992-01-01 to Present GLOBAL N: 90 S: -90 E: 180 W: -180 RINEX
Ground-Based Meteorological Data (daily, 24 hour files) from Co-Located Ground-Based Global Navigation Satellite System GLONASS (GLObal NAvigation Satellite System) Receivers from NASA CDDIS GLONASS, GROUND STATIONS GLONASS P, GNSS RECEIVER 1998-01-01 to Present GLOBAL N: 90 S: -90 E: 180 W: -180 RINEX
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