Related External Websites


IGS Contributing and Partner Organizations

Click here for links to IGS Data Centers and Analysis Centers.

International Union of Geodesy and Geophysics (IUGG)

International Association of Geodesy (IAG)

Federation of Astronomical and Geophysical Data Analysis Services(FAGS)

International Earth Rotation Service (IERS)

IERS Terrestrial Reference Frame (ITRF)

IGS AC Coordinator -

International VLBI Service for Geodesy and Astrometry (IVS)

International Laser Ranging Service:

International DORIS Service:

Bureau International des Poids et Mesures (BIPM)

National Earth Orientation Service, USNO (NEOS)

University NAVSTAR Consortium (UNAVCO)

JPL's Ionospheric and Atmospheric Remote Sensing:

GPS Environmental & Earth Science Information System (GENESIS):


Related GPS Networks

Southern California Integrated GPS Network (SCIGN)

Plate Boundary Observatory

Pacific Northwest Geodetic Array - PANGA

Basin and Range Geodetic Network - BARGEN

Eastern Basin-Range and Yellowstone - EBRY

Alaska Deformation Array - AKDA

Long Valley Observatory

Cascades Volcano Observatory

Hawaiian Volcano Observatory

University of Miami Space Geodesy Lab

NRCan's Western Canada Deformation Array (WCDA)

NRCan's Geodetic Survey Division's Canadian Active Control System

National Geodetic Survey (NGS) Continuously Operating Reference Stations (CORS)

EUREF Permanent Network (EPN)

Ordnance Survey's UK National GPS Network

Ordnance Survey Ireland

Satellitenpositionierungsdienst (SAPOS)

Geodetic Infrastructure for Antarctica (GIANT)

Bay Area Regional Deformation (BARD)

Global and high accUracy Trajectory determination System (GUTS)


Red GNSS de Castilla y León


Related Links and Sites of Interest 

American Geophysical Union:

U.S. Coast Guard Navigation Information Center:

U.S. Department of Transportation:

Institute of Navigation:

Federal Geodetic Control Subcommittee. Interagency group involved with identifying civil user requirements for GPS and advising Department of Transportation on GPS policy and programs:

CANSPACE. Maintained by Dr. Richard Langley, professor, University of New Brunswick Department of Geodesy and Geomatics Engineering, and contributing editor, GPS World Innovation column:

National Geospatial-Intelligence Agency

MIT Lincoln Laboratory. Site for GLONASS and GPS information:

An Overview of the Global Positioning System. , developed by Peter H. Dana, The Geographer's Craft Project, Department of Geography, The University of Colorado at Boulder.

The Geographer's Craft Project, Department of Geography, The University of Colorado at Boulder:


GNSS System Providers





Online positioning services of IGS agencies


AUSPOS (Geoscience Australia)





General GPS (and Related) Resources

Inside GNSS:

USCG NAVCEN's Reference Information:

Aerospace Corporation's GPS Primer:

US FAA's GPS Satellite Navigation:

COMET's GPS for schools

QUEST's tutorials: GPS and Geodesy

GPS World Online:

Navtech Seminars & GPS Supply:

GPS Tutorials and Information:

How to use IGS Antenna Phase Center Corrections





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