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2. Satellite navigation - Wikipedia

   en.wikipedia.org/wiki/Satellite_navigation

   A satellite navigation system with global coverage is termed global navigation satellite system (GNSS). As of 2024, four global systems are operational: the United States's Global Positioning System (GPS), Russia's Global Navigation Satellite System , China's BeiDou Navigation Satellite System (BDS), [1] and the European Union's Galileo.

3. GNSS applications - Wikipedia

   en.wikipedia.org/wiki/GNSS_applications

   Global Navigation Satellite System (GNSS) receivers, using the GPS, GLONASS, Galileo or BeiDou system, are used in many applications. The first systems were developed in the 20th century, mainly to help military personnel find their way, but location awareness soon found many civilian applications.

4. Global Positioning System - Wikipedia

   en.wikipedia.org/wiki/Global_Positioning_System

   The Global Positioning System (GPS), originally Navstar GPS, [2] is a satellite-based radio navigation system owned by the United States Space Force and operated by Mission Delta 31. [ 3 ] [ 4 ] It is one of the global navigation satellite systems (GNSS) that provide geolocation and time information to a GPS receiver anywhere on or near the ...

5. Galileo (satellite navigation) - Wikipedia

   en.wikipedia.org/wiki/Galileo_(satellite_navigation)

   Galileo is a global navigation satellite system (GNSS) created by the European Union through the European Space Agency (ESA) and operated by the European Union Agency for the Space Programme (EUSPA). [6]

6. US agency probes risks of foreign satellite use by handheld ...

   www.aol.com/news/us-agency-probes-risks-foreign...

   The FCC has concerns U.S. handheld devices are receiving and processing Global Navigation Satellite System (GNSS) signals from satellites controlled by foreign adversaries in violation of ...

7. United Kingdom Global Navigation Satellite System - Wikipedia

   en.wikipedia.org/wiki/United_Kingdom_Global...

   The United Kingdom Global Navigation Satellite System (UK GNSS) was a United Kingdom Space Agency (UKSA) research programme which, between May 2018 and September 2020, developed outline proposals for a United Kingdom (UK) owned and operated conventional satellite navigation system, as a British alternative to the European Union (EU) owned and operated Galileo Global Navigation Satellite System.

8. List of GPS satellites - Wikipedia

   en.wikipedia.org/wiki/List_of_GPS_satellites

   Samples of three GPS satellites' orbits over a five-year period (2013 to 2018) USA-242 · USA-239 · USA-151 · Earth As of 22 January 2025, 83 Global Positioning System navigation satellites have been built: 31 are launched and operational, 3 are in reserve or testing, 43 are retired, 2 were lost during launch, and 1 prototype was never launched. 3 Block III satellites have completed ...

9. Assisted GNSS - Wikipedia

   en.wikipedia.org/wiki/Assisted_GNSS

   Assisted GNSS (A-GNSS) is a GNSS augmentation system that often significantly improves the startup performance—i.e., time-to-first-fix (TTFF)—of a global navigation satellite system (GNSS). A-GNSS works by providing the necessary data to the device via a radio network instead of the slow satellite link, essentially "warming up" the receiver ...