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Global Navigation Satellite System (GNSS) IGS Multi-GNSS Experiment (MGEX) Products from NASA CDDIS

Metadata Updated: September 19, 2025

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 NASA Crustal Dynamics Data Information System (CDDIS). GNSS provide autonomous geo-spatial positioning with global coverage. GNSS data sets from ground receivers at the CDDIS consist primarily of the data from the U.S. Global Positioning System (GPS) and the Russian GLObal NAvigation Satellite System (GLONASS). Since 2011, the CDDIS GNSS archive includes data from other GNSS (Europe’s Galileo, China’s Beidou, Japan’s Quasi-Zenith Satellite System/QZSS, the Indian Regional Navigation Satellite System/IRNSS, and worldwide Satellite Based Augmentation Systems/SBASs), which are similar to the U.S. GPS in terms of the satellite constellation, orbits, and signal structure. These products include satellite orbit, satellite and station clock, and station position solutions. They are generated multi-GNSS data in support of the IGS Multi-GNSS Experiment (MGEX). The observation data from a global permanent network of ground-based receivers are transmitted from the CDDIS and downloaded by analysis centers who generate these MGEX products. More information about the MGEX products is available on the Earthdata website at: https://www.earthdata.nasa.gov/data/space-geodesy-techniques/gnss/mgex-data-product.

Access & Use Information

Public: This dataset is intended for public access and use. License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

Downloads & Resources

Dates

Metadata Created Date April 11, 2025
Metadata Updated Date September 19, 2025

Metadata Source

Harvested from NASA Data.json

Additional Metadata

Resource Type Dataset
Metadata Created Date April 11, 2025
Metadata Updated Date September 19, 2025
Publisher CDDIS
Maintainer
Identifier 10.5067/GNSS/GNSS_IGSMGEXP_001
Data Last Modified 2025-09-11
Category Earth Science
Public Access Level public
Bureau Code 026:00
Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
Schema Version https://project-open-data.cio.gov/v1.1/schema
Catalog Describedby https://project-open-data.cio.gov/v1.1/schema/catalog.json
Harvest Object Id f1b2bfb8-fbf4-40f9-8aba-2ca04539c1bb
Harvest Source Id 58f92550-7a01-4f00-b1b2-8dc953bd598f
Harvest Source Title NASA Data.json
Homepage URL https://cddis.nasa.gov/archive/gnss/products/mgex
Old Spatial {"EastBoundingCoordinate":180,"NorthBoundingCoordinate":90,"SouthBoundingCoordinate":-90,"WestBoundingCoordinate":-180},"CARTESIAN"
Program Code 026:000
Source Datajson Identifier True
Source Hash dc30b38269444860d5a8b089ba24406f9559533aecc8dcda17094c914dd4eaee
Source Schema Version 1.1
Spatial
Temporal 2009-02-01/2009-02-01

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