Search datasets
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These data-derived products are the International GNSS Service (IGS) Analysis Centers' (AC) contribution to the International Terrestrial Reference Frame (ITRF) 2020.
Search relevance: 1.00 | Views last month: 30 | Catalog Last Checked: October 20, 2026 at 11:55 PM -
This dataset consists of ground-based Global Navigation Satellite System (GNSS) GPS Broadcast Ephemeris Data (daily files) from the NASA Crustal Dynamics Data Information System (CDDIS). GNSS...
Search relevance: 1.00 | Views last month: 17 | Catalog Last Checked: October 21, 2026 at 12:14 AM -
This dataset consists of ground-based Global Navigation Satellite System (GNSS) GPS Broadcast Ephemeris Data (hourly files) from the NASA Crustal Dynamics Data Information System (CDDIS). GNSS...
Search relevance: 1.00 | Views last month: 15 | Catalog Last Checked: October 21, 2026 at 12:14 AM -
This derived product set consists of Global Navigation Satellite System satellite orbit products (daily files, generated daily) from the real-time IGS analysis center submissions available from...
Search relevance: 1.00 | Views last month: 13 | Catalog Last Checked: October 21, 2026 at 12:13 AM -
The IERS Rapid Service/Prediction Center is the product center of the International Earth Rotation and Reference Systems Service responsible for providing Earth orientation parameters (EOPs) on a...
Search relevance: 1.00 | Views last month: 12 | Catalog Last Checked: October 21, 2026 at 12:09 AM -
This dataset consists of ground-based multi-GNSS (Global Navigation Satellite System) Broadcast Ephemeris Data. GNSS satellites provide autonomous geo-spatial positioning with global coverage....
Search relevance: 1.00 | Views last month: 11 | Catalog Last Checked: October 21, 2026 at 01:04 AM -
This dataset consists of ground-based Global Navigation Satellite System (GNSS) Observation Data (1-second sampling, sub-hourly files) from the NASA Crustal Dynamics Data Information System...
Search relevance: 1.00 | Views last month: 11 | Catalog Last Checked: October 21, 2026 at 12:14 AM -
FOR EXPERT USE ONLY. This dataset contains estimates of the total month-by-month geopotential of the Earth, derived from the Gravity Recovery and Climate Experiment Follow-On (GRACE-FO) mission...
Search relevance: 1.00 | Views last month: 9 | Catalog Last Checked: October 20, 2026 at 11:30 PM -
This derived product set consists of Global Navigation Satellite System Final Combined Station Positions/Velocities Product available from the Crustal Dynamics Data Information System (CDDIS)....
Search relevance: 1.00 | Views last month: 8 | Catalog Last Checked: October 21, 2026 at 12:12 AM -
FOR EXPERT USE ONLY. This dataset contains estimates of the total month-by-month geopotential of the Earth, derived from the Gravity Recovery and Climate Experiment Follow-On (GRACE-FO) mission...
Search relevance: 1.00 | Views last month: 8 | Catalog Last Checked: October 20, 2026 at 11:30 PM -
This product contains a time series of clock biases for healthy satellites in the GPS constellation that are accumulated every minute throughout the day. In addition, formal 1-sigma uncertainties...
Search relevance: 1.00 | Views last month: 7 | Catalog Last Checked: October 20, 2026 at 11:40 PM -
This dataset consists of ground-based Global Navigation Satellite System (GNSS) Mixed Broadcast Ephemeris Data (daily files) from the NASA Crustal Dynamics Data Information System (CDDIS). GNSS...
Search relevance: 1.00 | Views last month: 7 | Catalog Last Checked: October 21, 2026 at 12:14 AM -
Very Long Baseline Interferometry (VLBI) is a geometric technique: it measures the time difference between the arrival at two Earth-based antennas of a radio wavefront emitted by a distant quasar....
Search relevance: 1.00 | Views last month: 7 | Catalog Last Checked: October 21, 2026 at 12:09 AM -
This dataset consists of ground-based Global Navigation Satellite System (GNSS) Combined Broadcast Ephemeris Data (daily files of all distinct navigation messages received in one day) from the...
Search relevance: 1.00 | Views last month: 7 | Catalog Last Checked: October 21, 2026 at 12:14 AM -
Doppler Orbitography and Radiopositioning Integrated by Satellite (DORIS) Cumulative Station Position Product from the NASA Crustal Dynamics Data Information System (CDDIS). DORIS is a...
Search relevance: 1.00 | Views last month: 7 | Catalog Last Checked: October 21, 2026 at 12:13 AM -
This derived product set consists of Global Navigation Satellite System Final Satellite and Receiver Clock Product (30-second granularity, daily files, generated weekly) from the NASA Crustal...
Search relevance: 1.00 | Views last month: 6 | Catalog Last Checked: October 21, 2026 at 12:14 AM -
This dataset consists of ground-based Global Navigation Satellite System (GNSS) Beidou Broadcast Ephemeris Data (sub-hourly files) from the NASA Crustal Dynamics Data Information System (CDDIS)....
Search relevance: 1.00 | Views last month: 6 | Catalog Last Checked: October 21, 2026 at 12:14 AM -
This dataset consists of ground-based Global Navigation Satellite System (GNSS) Galileo Broadcast Ephemeris Data (daily files) from the NASA Crustal Dynamics Data Information System (CDDIS). GNSS...
Search relevance: 1.00 | Views last month: 6 | Catalog Last Checked: October 21, 2026 at 12:14 AM -
This derived product set consists of Global Navigation Satellite System satellite and receiver clock combination product (30-second granularity, daily files, generated daily) from the real-time...
Search relevance: 1.00 | Views last month: 6 | Catalog Last Checked: October 21, 2026 at 12:13 AM -
FOR EXPERT USE ONLY. The GRACE Level 1B data provide all necessary inputs to derive monthly time variations in the Earth's gravity field. Level 1B data are also used for GRACE orbit and mean...
Search relevance: 1.00 | Views last month: 6 | Catalog Last Checked: October 20, 2026 at 11:53 PM
