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National Geodetic Survey

  • Positioning America for the Future

    NGS provides the framework for all positioning activities in the Nation. The foundational elements - latitude, longitude, elevation, shoreline information and their changes over time.

GPS World

  • The Business and Technology of Global Positioning, Navigation and Timing

    GPS World, the magazine, has covered the global positioning industry since 1989. Our website, gpsworld.com, began providing that same coverage in 1998, with news as it happens. GPS World’s Navigate! newsletter first appeared in 2007, providing news conveniently delivered to your inbox.

Oregon Real-Time GNSS Network

  • GLONASS and the Oregon GNSS Network

    The Oregon DOT Geometronics Unit is operating and expanding the Oregon Real-time GNSS Network, a network of permanently installed, continuously operating ​GNSS reference stations. GPS World’s Navigate! newsletter first appeared in 2007, providing news conveniently delivered to your inbox.

Washington State Reference Network

  • Washington State Reference Network

    The WSRN (Washington State Reference Network) is operated as a cooperative of over 100 Continuously Operating Reference Stations (CORS). These GPS/GNSS CORS provide raw GNSS observation data for both real-time and static high precision positioning.

USFS GPS test site information

  • Forest Service GPS Home Page

    GPS users can find information about GPS reference data as well as receiver performance reports and links to GPS related information. This page focuses on forestry related GPS mapping with emphasis on receiver operation in backcountry/wildland environments for land management.

Oregon GPS Users Group

  • SERVING SURVEY & GIS PROFESSIONALS

    ​The Oregon GNSS Users Group was established in 1988 to promote the use and understanding of GNSS for surveying and mapping in the State of Oregon and also to cooperate in the establishment of the Oregon High Accuracy GNSS Reference Network. GPS World’s Navigate! newsletter first appeared in 2007, providing news conveniently delivered to your inbox.

California Real-Time Network

  • Scripps Orbit and Permanent Array Center (SOPAC)

    The California Real Time Network (CRTN) is a UC San Diego research program led by SOPAC and partners to maintain real-time GPS stations across California free to the public.
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