Saturday, December 26, 2015

Latest Global Positioning System Satellite Goes Live

By: Justin Ray
Spaceflight Now
9 December 2015

The newest Global Positioning System replenishment satellite went into operation Tuesday night, five weeks 
after ascending to space from Cape Canaveral atop a United Launch Alliance Atlas 5 rocket.

The GPS 2F-11 navigation spacecraft was launched Oct. 31 into a circular orbit 11,000 nautical mile high 
and tilted 55 degrees to the equator.

GPS 2F-11 has assumed Plane E, Slot 2 of the network. The new bird took the place of GPS 2R-10 satellite, 
launched in 2003. The Lockheed Martin-built satellite has outlived its 7.5-year design life and will shift 
to an alternate role within the constellation for its remaining years.

The next satellite in the series, GPS 2F-12, was shipped to Cape Canaveral on Oct. 8 in preparation for 
liftoff on Feb. 3 aboard another Atlas 5.

Boeing has built a dozen Block 2F satellites with improved accuracy, additional signals, better 
anti-jamming and longer design lives for the satellites.

"The GPS 2F satellites play a key role in our modernization effort to provide new space-based capabilities 
for users around the globe and for decades to come," said Lt. Gen. Samuel Greaves, Space and Missile 
Systems Center commander and Air Force Program Executive Officer for Space.


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