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GPS Block IIIF, or GPS III Follow On (GPS IIIF), is the second set of GPS Block III satellites, consisting of up to 22 space vehicles. The United States Air Force began the GPS Block IIIF acquisition effort in 2016. [7] On 14 September 2018, a manufacturing contract with options worth up to $7.2 billion was awarded to Lockheed Martin.
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 (scheduled for 2022). The United States Space Force awarded the US$96 million Contingency Operations contract in February 2016. [74]
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 ...
Fifth GPS Block III satellite, named Neil Armstrong: USA-320: 2022-01-13 2022-002CV Falcon 9 Block 5: Unknown Launched with USA-321, USA-322 and USA-323 on Transporter 3 Rideshare Launch. Likely the satellites were built by SpaceX based on the Starshield bus (based on Starlink Block v1.5 technology), were deployed by the US army.
USA-343 was launched by SpaceX on 18 January 2023 at 12:24 UTC, atop Falcon 9 booster B1077.. The launch took place from SLC-40 at Cape Canaveral Space Force Station, and placed USA-343 directly into semi-synchronous orbit.
U.S. Space Force spacecraft Name Spacecraft image Mission Operator Number Advanced Extremely High Frequency (AEHF) Satellite communications: Space Delta 8 [173] 6 [114] Advanced Technology Risk Reduction (ATRR) Space surveillance [174] Space Delta 9 [175] 1 [114] Defense Meteorological Satellite Program (DMSP) Environmental monitoring: Mission ...
Two satellites were launched aboard the Space Shuttle Atlantis in 1985 during the STS-51-J flight. As of 14 September 2021, six DSCS-III satellites were still operational. [2] DSCS operations are currently run by the 4th Space Operations Squadron out of Schriever Space Force Base.
Milstar (Military Strategic and Tactical Relay) [1] is a constellation of military communications satellites in geosynchronous orbit, which are operated by the United States Space Force, and provide secure and jam-resistant worldwide communications to meet the requirements of the Armed Forces of the United States. Six spacecraft were launched ...