GPS Block IIIF

GPS Block IIIF
ManufacturerLockheed Martin
Country of originUnited States
OperatorUnited States Space Force
ApplicationsSatellite navigation
Specifications
BusSV11-SV12: Lockheed Martin LM2100M[1],
SV13+: Lockheed Martin LM2100 Combat Bus[2]
RegimeSemi-synchronous MEO
Design life15 years
Production
StatusIn production
PlannedUp to 22[3]
On order10[4]
Built0
Maiden launch2027 (planned)[5]
Last launch2034 (planned)[6]
Related spacecraft
Derived fromGPS Block III
← GPS Block III

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.[8][9] The 22 satellites in Block IIIF are projected to start launching in 2027, with launches estimated to last through at least 2037.[5][6][10]

  1. ^ "GPS-3F (Navstar-3F)". space.skyrocket.de. Retrieved 23 January 2021.
  2. ^ Cite error: The named reference sv_15-17 was invoked but never defined (see the help page).
  3. ^ Divis, Dee Ann (15 September 2018). "Lockheed Awarded $7.2 billion GPS IIIF Contract". InsideGNSS.com. Retrieved 22 January 2023.
  4. ^ Cite error: The named reference sv_18-20 was invoked but never defined (see the help page).
  5. ^ a b "Military Communications & Positioning, Navigation, and Timing Overview & GPS Enterprise Update" (PDF). U.S. Space Force Space Systems Command. 16 November 2022. Retrieved 21 January 2023.
  6. ^ a b Gleckel, Gerry (15 November 2017). "GPS Status and Modernization Program" (PDF). gps.gov. U.S. Air Force. Retrieved 1 December 2017. Public Domain This article incorporates text from this source, which is in the public domain.
  7. ^ "SMC releases RFP for GPS III Space Vehicles 11+ Phase 1 Production Readiness Feasibility Assessment". U.S. Air Force Space and Missile System Center Public Affairs Office. 8 January 2016. Retrieved 22 January 2023.
  8. ^ "AF Announces selection of GPS III follow-on contract". Secretary of the Air Force Public Affairs. 14 September 2018. Retrieved 22 June 2021.
  9. ^ "Air Force's Space and Missile Systems Center Awards Global Positioning System III Space Vehicles 11+ Phase 1 Production Readiness Feasibility Assessment Contracts". U.S. Air Force Space and Missile Systems Center. 5 May 2016. Retrieved 1 December 2017. Public Domain This article incorporates text from this source, which is in the public domain.
  10. ^ "GPS MODERNIZATION – Delays Continue in Delivering More Secure Capability for the Warfighter – Report to Congressional Committees" (PDF). U.S. Government Accounting Office. For further information contact Jon Ludwigson. United States Government Accounting Office (GAO-24-106841). September 2024. Retrieved 1 November 2024.{{cite web}}: CS1 maint: others (link)