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  2. USA-35 - Wikipedia

    en.wikipedia.org/wiki/USA-35

    USA-35, also known as Navstar 2-01, GPS II-1 and GPS SVN-14, was an American navigation satellite which formed part of the Global Positioning System. It was the first of nine Block II GPS satellites to be launched, which were the first operational GPS satellites to be launched.

  3. USA-132 - Wikipedia

    en.wikipedia.org/wiki/USA-132

    USA-132, also known as GPS IIR-2 and GPS SVN-43, is an American navigation satellite which forms part of the Global Positioning System. It was the second Block IIR GPS satellite to be launched, out of thirteen in the original configuration, and twenty one overall. GPS IIR-1 failed to achieve orbit, so USA-132 was the first successful Block IIR ...

  4. USA-66 - Wikipedia

    en.wikipedia.org/wiki/USA-66

    USA-66, also known as GPS IIA-1, GPS II-10 and GPS SVN-23, was an American navigation satellite which formed part of the Global Positioning System. It was the first of nineteen Block IIA GPS satellites to be launched, and was the oldest GPS satellite still in operation until its decommissioning on 25 January 2016.

  5. GPS satellite blocks - Wikipedia

    en.wikipedia.org/wiki/GPS_satellite_blocks

    GPS Block III is the first series of third-generation GPS satellites, incorporating new signals and broadcasting at higher power levels. In September 2016, the United States Air Force awarded Lockheed Martin a contract option for two more Block III satellites, setting the total number of GPS III satellites to ten. [ 22 ]

  6. OPS 5111 - Wikipedia

    en.wikipedia.org/wiki/OPS_5111

    OPS 5111, also known as Navstar 1, NDS-1, GPS I-1 and GPS SVN-1, was an American navigation satellite launched in 1978 as part of the Global Positioning System development program. It was the first GPS satellite to be launched, and one of eleven Block I demonstration satellites.

  7. 2nd Navigation Warfare Squadron - Wikipedia

    en.wikipedia.org/wiki/2nd_Navigation_Warfare...

    On 30 January 1992, as part of an Air Force reorganization, 2 SCS was redesignated the 2d Space Operations Squadron. On June 18, 2004, a 24/7 user focal point, the GPSOC, was established. In late 2005, several National Geospatial-Intelligence Agency monitor stations were integrated into the network to improve navigation accuracy and signal ...

  8. Satellite navigation device - Wikipedia

    en.wikipedia.org/wiki/Satellite_navigation_device

    Vehicle navigation on a personal navigation assistant Garmin eTrex10 edition handheld. A satellite navigation device or satnav device, also known as a satellite navigation receiver or satnav receiver or simply a GPS device, is a user equipment that uses satellites of the Global Positioning System (GPS) or similar global navigation satellite systems (GNSS).

  9. GPS signals - Wikipedia

    en.wikipedia.org/wiki/GPS_signals

    Each subframe has the GPS time in 6-second increments. Subframe 1 contains the GPS date (week number), satellite clock correction information, satellite status and satellite health. Subframes 2 and 3 together contain the transmitting satellite's ephemeris data. Subframes 4 and 5 contain page 1 through 25 of the 25-page almanac. The almanac is ...