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

image of Earthdata graphic identifier design on top of data points

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!

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.

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) Mixed Observation Data (30-second sampling, hourly files) 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 Global Navigation Satellite System (GNSS) 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
Ground-Based Global Navigation Satellite System (GNSS) Observation Data (30-second sampling, daily, 24 hour files) from NASA CDDIS	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	GLOBAL	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	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 Global Navigation Satellite System (GNSS) Quasi-Zenith Satellite System (QZSS) Broadcast Ephemeris Data (30-second sampling, hourly files) from NASA CDDIS	QZSS, GROUND STATIONS	QZSS P, GNSS	1992-01-01 to Present	GLOBAL	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	QZSS, GROUND STATIONS	QZSS 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) Quasi-Zenith Satellite System (QZSS) Broadcast Ephemeris Data (sub-hourly files) from NASA CDDIS	QZSS, GROUND STATIONS	QZSS P, GNSS	1992-01-01 to Present	GLOBAL	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	SBAS, GROUND STATIONS	SBAS P, GNSS	1992-01-01 to Present	GLOBAL	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	SBAS, GROUND STATIONS	SBAS 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) Satellite-Based Augmentation System (SBAS) Broadcast Ephemeris Data (sub-hourly files) from NASA CDDIS	SBAS, GROUND STATIONS	SBAS P, GNSS	1992-01-01 to Present	GLOBAL	N: 90 S: -90 E: 180 W: -180	RINEX

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