The Sensitivity of Category I Precision Approach Availability to GPS Satellite Constellation

Phuong Peggy Tran, Jya-Syin Wu, Jeff Lewellen, John Angus

Abstract:	The Service Availability of satellite based navigation supporting Category I Precision Approach (PA CAT I) is highly sensitive to wide area/space based augmentation services and GPS satellite constellation characteristics. This paper explores PA CAT I Service Availability sensitivity to User's Differential Range Error (UDRE) and User's Ionospheric Vertical Error (UIVE) parameters (supplied by wide area/space based augmentation) in conjunction with the GPS satellite constellation. The basis for this analysis will be the Vertical Protection Level (VPL) criteria for PA CAT I service in accordance with the Minimum Operational Performance Standards for Global Positioning System/Wide Area Augmentation System Airborne Equipment, RTCA/DO-229A [1].
Published in:	Proceedings of the 12th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 1999) September 14 - 17, 1999 Nashville, TN
Pages:	233 - 250
Cite this article:	Tran, Phuong Peggy, Wu, Jya-Syin, Lewellen, Jeff, Angus, John, "The Sensitivity of Category I Precision Approach Availability to GPS Satellite Constellation," Proceedings of the 12th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 1999), Nashville, TN, September 1999, pp. 233-250.
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