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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 Platform Instrument Temporal Extent Spatial Extent Spatial Resolution Data Format
Ground-Based Global Navigation Satellite System (GNSS) Observation Data (30-second sampling, daily, 24 hour files) from NASA CDDIS 1 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

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

RINEX
Ground-Based Global Navigation Satellite System (GNSS) Observation Summary Data (30-second sampling, daily files), output of TEQC (translation, editing, and quality check) from NASA CDDIS 1 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

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

RINEX
Ground-Based Global Navigation Satellite System (GNSS) Quasi-Zenith Satellite System (QZSS) Broadcast Ephemeris Data (30-second sampling, hourly files) from NASA CDDIS 1 QZSS, GROUND STATIONS QZSS P, GNSS 1992-01-01 to Present

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

RINEX
Ground-Based Global Navigation Satellite System (GNSS) Quasi-Zenith Satellite System (QZSS) Broadcast Ephemeris Data (daily files) from NASA CDDIS 1 QZSS, GROUND STATIONS QZSS P, GNSS RECEIVERS 1992-01-01 to Present

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

RINEX
Ground-Based Global Navigation Satellite System (GNSS) Quasi-Zenith Satellite System (QZSS) Broadcast Ephemeris Data (sub-hourly files) from NASA CDDIS 1 QZSS, GROUND STATIONS QZSS P, GNSS 1992-01-01 to Present

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

RINEX
Ground-Based Global Navigation Satellite System (GNSS) Satellite-Based Augmentation System (SBAS) Broadcast Ephemeris Data (30-second sampling, hourly files) from NASA CDDIS 1 SBAS, GROUND STATIONS SBAS P, GNSS 1992-01-01 to Present

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

RINEX
Ground-Based Global Navigation Satellite System (GNSS) Satellite-Based Augmentation System (SBAS) Broadcast Ephemeris Data (daily files) from NASA CDDIS 1 SBAS, GROUND STATIONS SBAS P, GNSS RECEIVERS 1992-01-01 to Present

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

RINEX
Ground-Based Global Navigation Satellite System (GNSS) Satellite-Based Augmentation System (SBAS) Broadcast Ephemeris Data (sub-hourly files) from NASA CDDIS 1 SBAS, GROUND STATIONS SBAS P, GNSS 1992-01-01 to Present

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

RINEX
Ground-Based Global Navigation Satellite System (GNSS)-based Upper Atmospheric Realtime Disaster Information and Alert Network (GUARDIAN) Galileo daily antenna phase centers (24-hour files) from NASA CDDIS 1 Galileo, GROUND STATIONS 2023-10-01

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

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

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

JPL MetaFile (ASCII)
Ground-Based Global Navigation Satellite System (GNSS)-based Upper Atmospheric Realtime Disaster Information and Alert Network (GUARDIAN) Galileo Earth Orientation Parameters (1-day sampling, 7-day files) from NASA CDDIS 1 Galileo, GROUND STATIONS 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) GLONASS daily antenna phase centers (24-hour files) from NASA CDDIS 1 GLONASS, GROUND STATIONS 2023-10-01

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

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

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

JPL MetaFile (ASCII)
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 centers (24-hour files) from NASA CDDIS 1 GPS, GROUND STATIONS 2023-10-01

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

JPL Piecewise Constant Model Parameter (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 Global Navigation Satellite System (GNSS)-based Upper Atmospheric Realtime Disaster Information and Alert Network (GUARDIAN) GPS Earth Orientation Parameters (1-day sampling, 7-day files) from NASA CDDIS 1 GPS, GROUND STATIONS 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) Near Real-Time Ionospheric Total Electron Count (5-second sampling, 24-hour files) from NASA CDDIS 1 Galileo, GROUND STATIONS GNSS RECEIVER 2022-09-01

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

CSV
Ground-Based Global Navigation Satellite System High-rate Mixed Broadcast Ephemeris Data (sub-hourly files) from NASA CDDIS 1 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

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

RINEX
Ground-Based Global Navigation Satellite System Mixed Broadcast Ephemeris Data (daily files) from NASA CDDIS 1 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

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

RINEX
Ground-Based GNSS-based Upper Atmospheric Realtime Disaster Information and Alert Network (GUARDIAN) Galileo daily accumulated real-time Precise Orbit Determination (POD) Attitude Quaternions (30-second sampling, 24-hour files) from NASA CDDIS 1 GLONASS, GROUND STATIONS 2023-10-01

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

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

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

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) Attitude Quaternions (30-second sampling, 24-hour files) from NASA CDDIS 1 GLONASS, GROUND STATIONS 2023-10-01

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

JPL Quaternions (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.

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