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.

Learn More About GNSS

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Accessing Real-Time GNSS Data and Derived Products from NASA's CDDIS

Join us on Wednesday, July 22, 2015 at 2pm ET to learn how to discover and access the real-time Global Navigation Satellite System (GNSS) data!

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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.

Crustal Dynamics Data Information System webinar banner image showing Global Navigation Satellite System data.avigation

GNSS Products at NASA's CDDIS for Disaster Monitoring, Crustal Deformation, Extreme Weather, and Other Applications

Join us on Sept. 28 to learn about the NASA Making Earth System Data Records (ESDR) for Use in Research Environments (MEaSUREs) Extended Solid Earth Science ESDR System (ESESES) project, whose Global Navigation Satellite System (GNSS)-derived data products enable research on tectonic motion, crustal deformation, earthquakes, tsunamis, sea level rise, extreme weather, and more!

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 Global Navigation Satellite System (GNSS) GLONASS real-time POD Clock Corrections (1-second sampling, 60-second files) from NASA CDDIS	GLONASS, GROUND STATIONS	GNSS RECEIVER	2023-10-01	GLOBAL	N: 90 S: -90 E: 180 W: -180	JPL TimeDependentParameter (ASCII)
Ground-Based Global Navigation Satellite System (GNSS) GLONASS real-time POD Clock Corrections (60-second sampling, 60-second files) from NASA CDDIS	GLONASS, GROUND STATIONS	GNSS RECEIVER	2023-10-01	GLOBAL	N: 90 S: -90 E: 180 W: -180	JPL TimeDependentParameter (ASCII)
Ground-Based Global Navigation Satellite System (GNSS) GLONASS real-time POD Orbits (60-second sampling, 60-second files) from NASA CDDIS	GLONASS, GROUND STATIONS	GNSS RECEIVER	2023-10-01	GLOBAL	N: 90 S: -90 E: 180 W: -180	JPL pos-GOA (ASCII)
Ground-Based Global Navigation Satellite System (GNSS) GPS Broadcast Ephemeris Data (30-second sampling, hourly files) from NASA CDDIS	GPS, GROUND STATIONS	GPSP, GNSS	1992-01-01 to Present	GLOBAL	N: 90 S: -90 E: 180 W: -180	RINEX
Ground-Based Global Navigation Satellite System (GNSS) GPS Broadcast Ephemeris Data (daily files) from NASA CDDIS	GPS, GROUND STATIONS	GPS P, GNSS RECEIVERS	1992-01-01 to Present	GLOBAL	N: 90 S: -90 E: 180 W: -180	RINEX
Ground-Based Global Navigation Satellite System (GNSS) GPS real-time POD Attitude Quaternions (30-second sampling, 60-second files) from NASA CDDIS	GPS, GROUND STATIONS	GNSS RECEIVER	2023-10-01	GLOBAL	N: 90 S: -90 E: 180 W: -180	JPL Quaternions (ASCII)
Ground-Based Global Navigation Satellite System (GNSS) GPS real-time POD Clock Corrections (1-second sampling, 60-second files) from NASA CDDIS	GPS, GROUND STATIONS	GNSS RECEIVER	2023-10-01	GLOBAL	N: 90 S: -90 E: 180 W: -180	JPL TimeDependentParameter (ASCII)
Ground-Based Global Navigation Satellite System (GNSS) GPS real-time POD Clock Corrections (60-second sampling, 60-second files) from NASA CDDIS	GPS, GROUND STATIONS	GNSS RECEIVER	2023-10-01	GLOBAL	N: 90 S: -90 E: 180 W: -180	JPL TimeDependentParameter (ASCII)
Ground-Based Global Navigation Satellite System (GNSS) GPS real-time POD Orbits (60-second sampling, 60-second files) from NASA CDDIS	GPS, GROUND STATIONS	GNSS RECEIVER	2023-10-01	GLOBAL	N: 90 S: -90 E: 180 W: -180	JPL pos-GOA (ASCII)
Ground-Based Global Navigation Satellite System (GNSS) Hatanaka-compressed Observation Data (1-second sampling, sub-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

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