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Samples of three GPS satellites' orbits over a five-year period (2013 to 2018) USA-242 · USA-239 · USA-151 · Earth As of 15 August 2023, 83 Global Positioning System navigation satellites have been built: 31 are launched and operational, 4 are unhealthy or in reserve, 41 are retired, 2 were lost during launch, and 1 prototype was never launched. 4 Block III satellites have completed ...
The Global Positioning System ( GPS ), originally Navstar GPS, [ 2] is a satellite-based radio navigation system owned by the United States government and operated by the United States Space Force. [ 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 ...
GPS satellite blocks are the various production generations of the Global Positioning System (GPS) used for satellite navigation. The first satellite in the system, Navstar 1, was launched on 22 February 1978. [ 1] The GPS satellite constellation is operated by the 2nd Space Operations Squadron (2SOPS) of Space Delta 8, United States Space Force .
This is a list of satellites in geosynchronous orbit (GSO). These satellites are commonly used for communication purposes, such as radio and television networks, back-haul, and direct broadcast. Traditional global navigation systems do not use geosynchronous satellites, but some SBAS navigation satellites do.
The Contingency Operations effort enables GPS III satellites to participate in the GPS constellation, albeit in a limited fashion, without having to wait until OCX Block 1 becomes operational (currently scheduled for 2022). The United States Space Force awarded the US$96 million Contingency Operations contract in February 2016. [76]
G. List of Galileo satellites. List of satellites in geosynchronous orbit. List of GLONASS satellites. List of GOES satellites. List of GPS satellites.
List of USA satellites. This is a list of satellites and spacecraft which have been given USA designations by the United States Air Force. These designations have been applied to most United States military satellites since 1984, and replaced the earlier OPS designation. As of June 2022, USA designations have been assigned to 331 space satellites.
Model of a Galileo satellite. This is a list of past and present satellites of the Galileo navigation system. As of May 2024, 30 Galileo (4 IOV "In Orbit Validation" and 26 FOC "Full Operational Capability") satellites have been launched. The 2 GIOVE prototype vehicles were retired in 2012. Currently, 23 satellites are operational, 2 are under ...