As of 25 June 2025, 83 Global Positioning System navigation satellites have been built: 32 are launched and operational, 7 are in reserve or testing, 39 are retired, 2 were lost during launch. One non …

The last of the GPS Block IIA satellites, launched between 1990 and 1997 was decommissioned in 2020. GPS Block IIR and IIR-M (modernized) included 21 vehicles launched between 2005 and 2009.

Feb 5, 2024 · After being launched, GPS satellites enter a period of testing before their signals are set to "Healthy". During normal operations, certain signals may be set to "Unhealthy" to accommodate …

As of July 3, 2023, there were a total of 31 operational satellites in the GPS constellation, not including the decommissioned, on-orbit spares. For more up-to-date constellation status information, visit the …

Apr 15, 2020 · Nineteen Block IIA satellites, slightly improved versions of the Block II series (the first full scale operational GPS satellites), were launched from November 26, 1990 until November 6, 1997. …

As of 25 June 2025, 83 Global Positioning System navigation satellites have been built: 32 are launched and operational, 7 are in reserve or testing, 39 are retired, 2 were lost during launch. One non …

The BLOCK II/IIA satellites, SVNs 13 through 40, are the second series of operational satellites developed by Rockwell International, (now Boeing North American, Inc.).

GPS Block III (previously Block IIIA) consists of the first ten GPS III satellites, which are used to keep the Navstar Global Positioning System operational. Lockheed Martin designed, developed and …

Apr 9, 2025 · GPS-2A (Global Positioning System) or Navstar-2A (Navigation System using Timing And ranging) are improved satellites of the second generation of the GPS navigation system. The Block …

The first of them was launched in 1989 and the last was decommissioned in 2007. During the time that the earliest of these satellites were in service, improved versions of the Block II satellites were built …