Geodetics - NASA Earthdata Geodetics, or geodesy, is the science of studying Earth’s shape, gravity and its effect on phenomena such as polar motion, waterbody tides, and tectonic motion in three-dimensional space over time Geodetic data has many uses including measuring the changes to Earth's tectonic plates following earthquakes and other crustal dynamics, tracking variations in ocean topography, and locating Earth
Very Long Baseline Interferometry (VLBI) data from NASA CDDIS Crustal Dynamics Data Information System, Geodesy and Geophysics Laboratory, Earth Sciences Division, Sciences and Exploration Directorate, Goddard Space Flight Center, NASA (CDDIS) Concept ID C1000000043-CDDIS Data State ACTIVE 1982-01-01 Updated 2012-06-14 Science Keywords Geodetics Documents GENERAL DOCUMENTATION URL for more information on
Global Navigation Satellite Systems (GNSS) Troposphere . . . - Earthdata Concept ID C1000000018-CDDIS Data State ACTIVE Processing Level 2 Published 1997-01-26 Updated 2012-06-14 Science Keywords Geodetics, GNSS (Global Navigation Satellite Systems) TABLE OF CONTENTS Documents GENERAL DOCUMENTATION URL for more information on GNSS products
Earth Orientation Parameters (EOP) products from the International . . . 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 rapid turnaround basis This service is primarily intended for real-time users and others needing the highest quality EOP information sooner than is available in the IERS final series (Bulletin B
Global Navigation Satellite System (GNSS) Satellite Data from NASA . . . Concept ID C1000000024-CDDIS Data State ACTIVE Number of Files Granules 0 Processing Level 1 Published 2002-01-01 Updated 2012-06-14 Science Keywords Geodetics, GNSS (Global Navigation Satellite Systems) Ground-Based Global Navigation Satellite System (GNSS) Satellite data
Daily 30-second Combined GPS Broadcast Ephemeris data - Earthdata This dataset consists of ground-based Global Navigation Satellite System (GNSS) GPS Combined Broadcast Ephemeris Data (daily files of all distinct navigation messages received in one day) from the NASA Crustal Dynamics Data Information System (CDDIS) GNSS satellites provide autonomous geo-spatial positioning with global coverage GNSS data sets from ground receivers at the CDDIS consist
Global Navigation Satellite System (GNSS) Predicted . . . - Earthdata Ionosphere Total Electron Content (TEC) grids derived from analysis of Global Navigation Satellite System (GNSS) data These products are the generated by analysis centers in support of the International GNSS Service (IGS) and combined by the IGS ionosphere analysis coordinator to form the official IGS predicted ionopsphere product (daily)
Doppler Orbitography and Radiopositioning Integrated by Satellite . . . Description The Doppler Orbitography by Radiopositioning Integrated on Satellite (DORIS) was developed by the Centre National d'Etudes Spatiales (CNES) with cooperation from other French government agencies The system was developed to provide precise orbit determination and high accuracy location of ground beacons for point positioning DORIS is a dual-frequency Doppler system that has been
Space Geodesy Techniques - NASA Earthdata Data provided by space geodesy techniques are used to support scientific and societal applications in areas such as Earth observations, positioning, navigation, and timing