Ground-Based Integrity System (GBIS) for GPS

Jum-Sun Leung and Allen Lowry

Abstract:	A ground-based integrity system satisfying the FAA Integrity time to alarm requirement is proposed. Analysis results show that meeting the requirement is both feasible and practical through a combination of GPS ground segment modifications and an upgrade of the current GPS TDMA crosslink system. The allocated performance requirement for each major component of the proposed architecture is determined and analysis results that support a conclusion that expected performance meets or exceeds the WAAS time to alarm requirement of less than 6 seconds is presented. We investigate the impact of some of these modifications and present some justification for the preliminary estimates of a less-than-6-second hazard warning delay.
Published in:	Proceedings of the 1998 National Technical Meeting of The Institute of Navigation January 21 - 23, 1998 Westin Long Beach Hotel Long Beach, CA
Pages:	763 - 771
Cite this article:	Leung, Jum-Sun, Lowry, Allen, "Ground-Based Integrity System (GBIS) for GPS," Proceedings of the 1998 National Technical Meeting of The Institute of Navigation, Long Beach, CA, January 1998, pp. 763-771.
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