The recently released Defense Department Directive 4650.05 on Positioning, Navigation and Timing (PNT) serves as an update to an earlier version. It amounts to an evolution in formal guidance, nothing more, and the changes it incorporates should not come as a surprise to anyone. Especially anyone who has been keeping track of how GPS decisions have been made over the last few years ? least of all the United States Air Force (USAF), current stewards of space and of GPS, the largest government-funded, -maintained, and -supported constellation in space today.
Thursday, October 15, 2009
Gps insights — march 2008
The recently released Defense Department Directive 4650.05 on Positioning, Navigation and Timing (PNT) serves as an update to an earlier version. It amounts to an evolution in formal guidance, nothing more, and the changes it incorporates should not come as a surprise to anyone. Especially anyone who has been keeping track of how GPS decisions have been made over the last few years ? least of all the United States Air Force (USAF), current stewards of space and of GPS, the largest government-funded, -maintained, and -supported constellation in space today.
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