Performance Projections of GPS IIF

Kamran Ghassemi, and Steven C. Fisher

Abstract:	The GPS Block IIF satellites are the next generation satellites that will be launched starting in late 2001 to replace the IIA and IIR vehicles. Building on the successful heritage of the Block II/IIA satellites in operation and performance, the IIF will provide significant performance enhancements over the IIA and IIR. We discuss design enhancements leading to lower User Range Error (URE) and positioning error with associated error analyses. These include improvements in performance of the IIF frequency standards, reduction in age-of-data of the broadcast navigation message to < 3 hours across the constellation through a new mode of operation (the Crosslink Navigation Update mode), provisions for C/A and P-code on L2, and increased user received power levels.
Published in:	Proceedings of the 10th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 1997) September 16 - 19, 1997 Kansas City, MO
Pages:	407 - 415
Cite this article:	Ghassemi, Kamran, Fisher, Steven C., "Performance Projections of GPS IIF," Proceedings of the 10th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 1997), Kansas City, MO, September 1997, pp. 407-415.
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