Links related to Global Navigation Satellite Systems
Technical documents, data, and services
- GPS Reference Information
- IGS - International GPS Service
- Latest GPS Precise Ephemeris Data
- NGS - Precise Ephemerides
- GPS Time
- The RINEX-2 Format
- EGNOS Real Time Performance
- Giove Homepage
GNSS magazines
Associations, organisations, and agencies
- EGNOS
- ESA - European Space Agency
- EUREF - Permanent Network
- Galileo - The European Satellite Navigation System
- GSA - European GNSS Supervisory Authority
- GLONASS
- IAG - International Association of Geodesy
- IERS - International Earth Rotation Service
- National Space-Based PNT Executive Committee (replaced the Interagency GPS Executive Board)
- ION - The Institute of Navigation
- NASA - National Aeronautics and Space Administration
- NGS - National Geodetic Survey
- NOAA - National Oceanic and Atmospheric Administration
- UNAVCO - University NAVSTAR Consortium
- U.S. Coast Guard - Navigation Center
- USNO - United States Naval Observatory
Receivers
- Javad Navigation Systems
- Leica Geosystems
- Thales Navigation
- Topcon Positioning Systems
- Trimble
- u-blox
- SiRF
Conferences, seminars, and meetings
Space related sites
- Space Environment Center
- Students for the Exploration and Development of Space
- The Satellite’s Encyclopedia
- United States Space Command, GPS Support Center