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  2. 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] 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 Earth where ...

  3. GPS satellite blocks - Wikipedia

    en.wikipedia.org/wiki/GPS_satellite_blocks

    A hydrazine propulsion system was used for orbital correction. The payload included two L-band GPS signals at 1575.42 MHz (L1) and 1227.60 MHz (L2). Each spacecraft carried two rubidium and two cesium clocks, as well as nuclear detonation detection sensors, leading to a mass of 1,660 kg (3,660 lb). [7]

  4. GPS Block IIF - Wikipedia

    en.wikipedia.org/wiki/GPS_Block_IIF

    The satellites supplement and partially replace the GPS Block IIA satellites that were launched between 1990 and 1997 with a design life of 7.5 years. [3] The final satellite of the Block IIA series was decommissioned on 09 October 2019. [4] The operational constellation now includes Block IIR, IIRM, IIF and III variants.

  5. GPS Block III - Wikipedia

    en.wikipedia.org/wiki/GPS_Block_III

    The United States' Global Positioning System (GPS) reached Full Operational Capability on 17 July 1995, [9] completing its original design goals. Advances in technology and new demands on the existing system led to the effort to modernize the GPS system. In 2000, the U.S. Congress authorized the effort, referred to as GPS III.

  6. USA-319 - Wikipedia

    en.wikipedia.org/wiki/USA-319

    USA-319, also known as GPS-III SV05, NAVSTAR 81 or Neil Armstrong, is a United States navigation satellite which forms part of the Global Positioning System. It was the fifth GPS Block III satellite to be launched.

  7. Positioning system - Wikipedia

    en.wikipedia.org/wiki/Positioning_system

    A local positioning system (LPS) is a navigation system that provides location information in all weather, anywhere within the coverage of the network, where there is an unobstructed line of sight to three or more signaling beacons of which the exact position on Earth is known.

  8. GPS Block IIIF - Wikipedia

    en.wikipedia.org/wiki/GPS_Block_IIIF

    GPS IIIF will be the first GPS satellite block to have all space vehicles participate in the Cospas-Sarsat system. The Cospas-Sarsat system is an international collection of satellites spanning low-earth, medium-earth, and geostationary orbit satellites which all listen for 406 MHz distress signals generated by beacons on earth.

  9. OPS 5114 - Wikipedia

    en.wikipedia.org/wiki/OPS_5114

    OPS 5114, also known as Navstar 4, GPS I-4 and GPS SVN-4, was an American navigation satellite launched in 1978 as part of the Global Positioning System development programme. It was the fourth of eleven Block I GPS satellites to be launched.