8 articles
Global Positioning System
The Global Positioning System (GPS) is a US satellite navigation system providing position and time worldwide, operated by the Space Force and fully operational since 1993.
GPS Block IIA
GPS Block IIA was the second operational generation of GPS satellites, with 19 launched from 1990 to 1997; the last served until 2019, over three times its 7.5-year design life.
GPS Block IIF
GPS Block IIF is a generation of twelve Global Positioning System satellites built by Boeing and launched from 2010 to 2016, first to broadcast the L5 civil signal.
GPS Block III
GPS Block III is the third generation of GPS satellites built by Lockheed Martin for the US Space Force, offering greater accuracy and jam-resistant M-code signals.
GPS Block IIR
GPS Block IIR is a generation of GPS navigation satellites built by Lockheed Martin for the United States Air Force, launched between 1997 and 2004 to replenish the constellation.
GPS satellite blocks
GPS satellite blocks are the successive generations of US Global Positioning System satellites, from the experimental Block I of 1978 to GPS III and GPS III Follow-On.
GPS signals
GPS signals are the radio transmissions from Global Positioning System satellites, each combining a carrier wave, pseudorandom ranging codes, and a navigation message used to determine position, velocity, and time.
List of GPS satellites
The list of GPS satellites, also known as the list of GPS satellite launches, covers the US Navstar constellation, which has flown 31 operational satellites since 1978.