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en.wikipedia.org/wiki/Global_Positioning_System

The Global Positioning System (GPS), originally Navstar GPS, is a space-based radionavigation system owned by the United States government and operated by the United States Air Force. It is a global navigation satellite system that provides geolocation and time information to a GPS receiver anywhere on or ...

www.garmin.com/aboutGPS

GPS receivers use this information and trilateration to calculate a user's exact location. Essentially, the GPS receiver measures the distance to each satellite by  ...

www.gps.gov

Official U.S. government information about the Global Positioning System (GPS) and related topics.

www.nasa.gov/directorates/heo/scan/communications/policy/GPS.html

Global Positioning System or GPS is a United States space-based radionavigation system that helps pinpoint a three dimensional position to about a meter of ...

www.navcen.uscg.gov/?pageName=GPSmain

Jul 27, 2017 ... GENERAL INFORMATION ON GPS. GPS is a satellite-based radionavigation system developed and operated by the U.S. Department of ...

www.faa.gov/about/office_org/headquarters_offices/ato/service_units/techops/navservices/gnss/gps

Nov 13, 2014 ... Currently 32 GPS satellites orbit the Earth at an altitude of approximately 11,000 miles providing users with accurate information on position, ...

www.colorado.edu/geography/gcraft/notes/gps/gps.html

Global Positioning System (GPS) Overview. ... When time information is transferred from one site to another, differential techniques can result in time transfers of ...

www.e-education.psu.edu/natureofgeoinfo/c5_p14.html

The Global Positioning System (GPS) employs trilateration to calculate the coordinates of positions at or near the Earth's surface. Trilateration refers to the ...

oceanservice.noaa.gov/facts/gps.html

GPS stands for Global Positioning System, and it lets us know where we are and where we are going anywhere on Earth.