Due to the lapse in federal government funding, NASA is not updating this website. We sincerely regret this inconvenience.
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.
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.
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.
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!
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.
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!
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
| Dataset | Platforms | Instruments | Temporal Extent | Location Keywords | Spatial Extent | Data Format |
|---|---|---|---|---|---|---|
| Ground-Based Satellite Laser Ranging (SLR) Observation Data (full-rate, daily, 24 hour files) from NASA CDDIS | LAGEOS-1, LAGEOS-2, ETALON-1, ETALON-2, GROUND STATIONS, AJISAI, STARLETTE, STELLA, Galileo, GLONASS, Beidou, IRNSS, QZSS, LARES | LASER REFLECTOR, SLR Station | 1976-01-01 to Present | GLOBAL | N: 90 S: -90 E: 180 W: -180 | ILRS data format, CRD format |
| Ground-Based Satellite Laser Ranging (SLR) Observation Data (full-rate, monthly files) from NASA CDDIS | LAGEOS-1, LAGEOS-2, ETALON-1, ETALON-2, GROUND STATIONS, AJISAI, STARLETTE, STELLA, Galileo, GLONASS, Beidou, IRNSS, QZSS, LARES | LASER REFLECTOR, SLR Station | 1976-01-01 to Present | GLOBAL | N: 90 S: -90 E: 180 W: -180 | ILRS data format, CRD format |
| Ground-Based Satellite Laser Ranging (SLR) Observation Data (normal points, daily, 24 hour files) from NASA CDDIS | LAGEOS-1, LAGEOS-2, ETALON-1, ETALON-2, GROUND STATIONS, AJISAI, STARLETTE, STELLA, Galileo, GLONASS, Beidou, IRNSS, QZSS, LARES | LASER REFLECTOR, SLR Station | 2016-01-01 to Present | GLOBAL | N: 90 S: -90 E: 180 W: -180 | ILRS data format, CRD format |
| Ground-Based Satellite Laser Ranging (SLR) Observation Data (normal points, hourly files) from NASA CDDIS | LAGEOS-1, LAGEOS-2, ETALON-1, ETALON-2, GROUND STATIONS, AJISAI, STARLETTE, STELLA, Galileo, GLONASS, Beidou, IRNSS, QZSS, LARES | LASER REFLECTOR, SLR Station | 2010-01-01 to Present | GLOBAL | N: 90 S: -90 E: 180 W: -180 | ILRS data format, CRD format |
| Ground-Based Satellite Laser Ranging (SLR) Observation Data (normal points, monthly files) from NASA CDDIS | LAGEOS-1, LAGEOS-2, ETALON-1, ETALON-2, GROUND STATIONS, AJISAI, STARLETTE, STELLA, Galileo, GLONASS, Beidou, IRNSS, QZSS, LARES | LASER REFLECTOR, SLR Station | 1982-01-01 to Present | GLOBAL | N: 90 S: -90 E: 180 W: -180 | ILRS data format, CRD format |
| Ground-Based Satellite Laser Ranging (SLR) Observation Data Summary (normal points, monthly files) from NASA CDDIS | LAGEOS-1, LAGEOS-2, ETALON-1, ETALON-2, GROUND STATIONS, AJISAI, STARLETTE, STELLA, Galileo, GLONASS, Beidou, IRNSS, QZSS, LARES | LASER REFLECTOR, SLR Station | 1982-01-01 to Present | GLOBAL | N: 90 S: -90 E: 180 W: -180 | ILRS data format, CRD format |
| ILRS Satellite Laser Ranging (SLR) station, Greenbelt, Maryland (GODL) | GPS | SLR Station | 2025-07-01 | N: 90 S: -90 E: 180 W: -180 | CRD | |
| International GNSS Service (IGS) GNSS site (ABMF00GLP), Les Abymes, Guadeloupe | GPS | 2025-07-01 | N: 16.7 S: 15.7 E: -61 W: -62 | RINEX | ||
| International Laser Ranging Service (ILRS) extension of the International Terrestrial Reference Frame 2020 (ITRF2020) TRF Model with additional SLR sites from NASA CDDIS | SATELLITES | 1976-05-01 | GLOBAL | N: 90 S: -90 E: 180 W: -180 | SINEX | |
| Lunar Orbiter Laser Altimeter (LOLA) one-way Laser Ranging Full Rate Data (all ranges collected, ground stations, aggregate of normal points daily) from NASA CDDIS | GROUND STATIONS | ALTIMETERS | 2009-07-01, 2014-09-01 | GLOBAL | N: 90 S: -90 E: 180 W: -180 | Consolidated Laser Ranging Data Format (CRD) version 1 |
SHOWING 10 OF 220
Frequently Asked Questions
Earthdata Forum
Our online forum provides a space for users to browse thousands of FAQs about research needs, data, and data applications. You can also submit new questions for our experts to answer.
Submit Questions to Earthdata Forumand View Expert Responses