We are in the process of migrating all NASA Earth science data sites into Earthdata from now until end of 2026. Not all NASA Earth science data and resources will appear here until then. Thank you for your patience as we make this transition.
Read about the Web Unification Project
GNSS Resources
Earthdata resources for users working with NASA’s Global Navigation Satellite System (GNSS) data include summary reports, news announcements, and related links.
GNSS Data Summary Reports
- Weekly GNSS data holdings
- Weekly MGEX data holdings
- Mail messages
GNSS Related Links
- International GNSS Service (IGS)
- IGS Tracking Stations
- IGS Analysis Centers
- IGS Data Centers
- IGS Analysis Center Coordinator (ACC) web sites
- IGS Real-Time Service (RTS)
- IGS Multi-GNSS Experiment (MGEX), including satellite information
- Current IGS station coordinates
- IGS site logs
- IGS antenna correction file (igs20.atx)
- IGS antenna correction file (igs14.atx)
- IGS data and product formats
- RINEX Version 2.11
- RINEX Version 3.03
- Guide to using IGS products
- ITRF solutions
- Spacecraft ID Correspondence Table for Orbit Exchange Files (SP3c)
- GNSS system status information
- NOAA's Continuously Operating Reference Stations (CORS)
- UNAVCO
- GPS Seamless Archive Center (GSAC)
- GLONASS
- Interactive GPS Calendar
- Earth orientation animations
GNSS Learning Resources
The GNSS-based Upper Atmospheric Realtime Disaster Information and Alert Network (GUARDIAN) aims to enhance early warning of tsunamis.
Data in Action
Dec. 13, 2024
Learn more about about the NASA Commercial Satellite Data Acquisition (CSDA) program vendor Spire and how to discover, access, and work with Spire data.
Webinar
Nov. 7, 2024
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!
Webinar
Sept. 8, 2022
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!
Webinar
April 14, 2022
SHOWING 4 OF 4
NASA’s Land, Atmosphere Near real-time Capability for EOS (LANCE) helps scientists like Dr. Glasscoe assess risks and responses to natural hazards on a global scale.
Data User Story
Dec. 8, 2021
The Global Navigation Satellite System (GNSS) enables the precise location of points on Earth’s surface. For geodesists like Dr. Herring, it also is a key geodetic technique for his studies of surface deformation processes.
Data User Story
Jan. 7, 2021
Knowing exactly where you are isn't good enough for science.
Feature Article
Dec. 28, 2020
More than half of Earth’s population lives in urban environments. NASA Earth science data help Dr. Kristy Tiampo explore the hazards that can impact these areas.
Data User Story
Dec. 22, 2020
SHOWING 4 OF 12
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