 | Article
AEP Goes Operational June 1, 2008
By: Arthur J. Dorsey,Jack Taylor,Major James J. Pace Jr.,Philip J. Mendicki
The phased transition of the 22-year-old Legacy GPS Master Control Station (MCS) to the Architecture Evolution Plan (AEP) control segment, which became operational in September 2007, constituted a multi-year cooperative effort to achieve a seamless navigation service transition to GPS users.
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New, Improved GPS March 1, 2006
By: Arthur J. Dorsey,Brent A. Renfro,Jon Little,Philip J. Mendicki,Richard G. Mach,Tom Creel
The GPS Legacy Accuracy Improvement Initiative has improved the accuracy of the Kalman filter state estimates, the accuracy of the broadcast ephemeris and clock parameters, and the ability to observe performance of GPS satellites.
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 | Article
New, Improved GPS March 1, 2006
By: Arthur J. Dorsey,Brent A. Renfro,Jon Little,Philip J. Mendicki,Richard G. Mach,Tom Creel
Doubling the amount of data available to the GPS Master Control Station by adding data from the National Geospatial-Intelligence Agency (NGA) GPS Monitor Station Network, the GPS Legacy Accuracy Improvement Initiative has yielded three important upgrades: improved accuracy of the Kalman filter...more >>
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