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GPS Resources

GNSS Internet Resources

The Almanac: Orbit data and resources on active GNSS satellites, including GPS, GLONASS, Galileo, Compass, and SBAS, as well as many online resources.

The Aerospace Corporation’s GPS Primer
Beidou/Compass System Information
Canadian Space Geodesy Forum
Civil GPS Service Interface Committee
Czech Technical University, Radio Engineering Dept.
EC Directorate-General for Energy and Transport (Galileo)
Educational Observatory Institute
European Space Agency (Galileo)
Federal Aviation Administration Navigation Services
Federal Geographic Data Committee
E6-B/C Pseudorandom Noise Codes for the Galileo In-Orbit Validation Satellites (PDF)
European GNSS Supervisory Authority (GSA)
European Satellite Services Provider (EGNOS)
Geoscience Australia
GPS, Geodesy, and Application Program
How GPS Receivers Work
The Institute of Navigation
International GNSS Service

Japanese Quasi-Zenith Satellite System (QZSS)
GPS Applications
National Air and Space Museum, GPS — A New Constellation
National Executive Committee for Space-Based Positioning, Navigation & Timing
National Geodetic Survey

National Geospatial-Intelligence Agency
National Institute of Standards and Technology (NIST), Time and Frequency Division
National Survey and Cadastre-Denmark
Natural Resources Canada Geodetic Survey

NRL GPS Bibliography

Russian Space Agency Information–Analytical Centre

Scripps Orbit and Permanent Array Center (SOPAC)
2nd Space Operations Squadron GPS Constellation Status
GPS Test Center of Expertise
USAF Global Positioning Systems Directorate
U.S. Coast Guard Navigation Center
U.S. Naval Observatory
WAAS Test Team