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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
Satellite Laser Ranging Mail Exploder distributing general information about ILRS-related activities to the ILRS community. 1 SATELLITES 1983-01-01 to 2021-12-31

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

SINEX
Satellite Laser Ranging products International Terrestrial Reference Frame (ITRF2020) Station Positions and Earth Orientation Parameters (EOP) Time Series (REPRO2020) from NASA CDDIS 1 SATELLITES 1983-01-01 to 2021-12-31

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

SINEX
Suomi-NPP VIIRS Level-1A Geolocation Data, version 2 2 Suomi-NPP VIIRS 2012-01-02 to Present

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

netCDF-4
Terra MODIS Level-1A Geolocation Data, version 1 1 Terra MODIS 2000-02-24 to Present

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

netCDF-4
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
Very Long Baseline Interferometry (VLBI) Celestial Reference Frame (CRF) solution products from NASA CDDIS 1 GROUND-BASED OBSERVATIONS VLBI Station 2002-01-01 to Present

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

IERS CRF
Very Long Baseline Interferometry (VLBI) Daily Intensive Solution Product (DSNI) 1 GROUND STATIONS VLBI Station 2007-08-28 to 2023-12-05

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

SINEX
Very Long Baseline Interferometry (VLBI) Daily SINEX Independent Solution product (DSNX) from NASA CDDIS 1 GROUND STATIONS VLBI Station 1984-02-03 to 2020-11-03

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

SINEX
Very Long Baseline Interferometry (VLBI) Data and Products Supporting Information from NASA CDDIS 1 GROUND STATIONS RF ANTENNA 1979-01-01 to Present

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

ASCII
Very Long Baseline Interferometry (VLBI) data from NASA CDDIS 1 GROUND STATIONS VLBI Station 1979-08-03 to Present

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

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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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