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Related Links

The Global Positioning System

Federal Aviation Administration: GPS Navigation Services

National Space-Based PNT Coordination Office:  GPS - Serving the World

U.S Air Force: GPS Directorate

U.S. Air Force Space Command: GPS Constellation Status

U.S. Air Force Space Command: GPS Operations Center

U.S. Coast Guard: Navigation Center

U.S. Coast Guard GPS Status Mailing List: Subscribe via E-mail

U.S. Dept. of Commerce: National Geodetic Survey

U.S. Dept. of Defense: National Geospatial-Intelligence Agency

U.S. Navy: USNO GPS Timing Operations


Global Navigation Satellite Systems

Chinese Space Program: Beidou/Compass Satellite Navigation System

European Space Agency: Galileo

Japan Aerospace Exploration Agency: QZSS (Quasi Zenith Satellite System)

Russian Space Agency: GLONASS (Global'naya Navigatsion-naya Sputnikovaya Sistema)


Satellite-Based Augmentation Systems

European Space Agency: EGNOS (European Geostationary Navigation Overlay Service)

Federal Aviation Administration: WAAS (Wide-Area Augmentation System)

Indian Space Research Organization: GAGAN (GPS-Aided GEO Augmented Navigation)

Japan Civil Aviation Bureau: MSAS (MTSAT Satellite-based Augmentation System)


Positioning / Navigation Warnings and Notifications

GPS World: Radar'd Out: GPS Vulnerable to High-Power Microwaves

GPS World: Solar Burst Impacts GPS

U.S. Coast Guard Warning: GPS Receiver Interference from Active TV Antennas

U.S. Coast Guard Notice: U.S. DGPS Site Locations


Standards and Formats

NIST: National Institute of Standards and Technology

NMEA: National Marine Electronics Association

RINEX: Receiver Independant Exchange

RTCM: Radio Technical Commission for Maritime Services


Marine / Offshore Resources

IHO: International Hydrographic Organization

IMCA: International Marine Contractors Association

IMO: International Maritime Organization

NOAA: U.S. National Oceanographic & Atmospheric Administration

OGP: International Association of Oil and Gas Producers


Educational/Learning Resources

Aerospace Corporation: GPS Primer

Discovery Channel: How GPS Receivers Work

EC Directorate for Energy and Transport: Galileo

Educational Observatory Institute: GPS Resources

Federal Geographic Data Committee:  Geospatial Platform

NASA: GPS Applications Exchange

National Air and Space Museum: GPS: A New Constellation


Other Positioning / Navigation Resources

CANSPACE: Canadian Space Geodesy Forum

ESSP: European Satellite Services Provider

GA: Geoscience Australia

GSA: European GNSS Supervisory Authority

IGS: International GNSS Service

ION: Institute of Navigation

ITRF: International Terrestrial Reference Frame

KMS: National Survey and Cadastre Denmark

NGS: National Geodetic Survey

NRCAN: Natural Resources Canada Geodetic Survey

NWS: National Weather Service

RICS: Royal Institution of Chartered Surveyors

RIN: Royal Institute of Navigation

SOPAC: Scripps Orbit and Permanent Array Center


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