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 by the United States Air Force on 22 February 1978. The GPS satellite constellation is now operated by the 2nd Navigation Warfare Squadron of Mission Delta 31, United States Space Force.
2nd Space Operations Squadron sets SVN-74 healthy and active (6025258)
GPS-constellation-3D-NOAA
GPS satellite constellation
2 SOPS bids farewell to miracle satellite (3046787)
Space Force decommissions 26-year-old GPS satellite to make way for GPSIII constellation (6061766)
Capt. Aaron Blain, 2nd Space Operations Squadron chief of navigation analyst payload, stands in front of a model of a Block IIF GPS-satellite on Schriever Air Force Base, Colo., Sept. 4, 2014.
COSMIC Radio Occultation
Obituary- Farewell to SVN-35 (3044015)
The USSF and Space Systems Command deliver a GPS III satellite to Cape Canaveral Air Force Station, Florida. Credit: US Space Force/Los Angeles Air Force Base.
GPS III Space Vehicle (SV)06 “Amelia Earhart” is being prepared for takeoff from Buckley Space Force Base, Colo., enroute to Cape Canaveral Space Force Station, Fla., Oct. 24, 2022.