GPS Constellation at 24 + 3

  • By Braxton
  • Published December 19, 2014
  • Tagged

SCHRIEVER AIR FORCE BASE, Colorado — The 50th Space Wing successfully completed a two phase Global Positioning System constellation expansion, known as “Expandable 24” or 24+3, on June 15. This expansion increased global GPS coverage and is now providing civil, military, and commercial GPS users with a more robust signal and a higher probability of signal acquisition in terrain challenged environments.

“This marks another successful milestone in our continued commitment to modernize our weapon system,” said Lt. Col. Jennifer Grant, 2nd Space Operations Squadron commander. “We take great pride in providing GPS performance that exceeds our requirements for the system, which we have been doing since 1995.”

Expandable 24 is a U.S. Strategic Command commander directed initiative, executed by the 2nd Space Operations Squadron, to reposition six satellites in the current GPS constellation. Given the strength and number of satellites in the current constellation, Air Force Space Command was in a unique position to enact this revolutionary strategy to benefit global users. AFSPC acted on this opportunity to increase the robustness of satellite availability and overall signal-in-space performance by expanding three of the baseline 24 constellation slots.

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