Performance Analysis of Alternative Methods for LAAS Multiple Reference Consistency Check

Curtis A. Shively

Abstract:	As one method of ensuring integrity of the reference receivers, the FAA’s Local Area Augmentation System (LAAS) ground segment will perform a multiple reference consistency check (MRCC). This paper presents a quantitative comparison of the performance of various methods under consideration for the MRCC function. These methods are intended to first detect anomalies in differential comections for each satellite from individual reference receivers and possibly exclude measurements from a specific reference receiver channel or entire receiver identified as the erroneous source. A standardized approach is proposed for evaluating MRCC methods. Detection thresholds are set to provide an acceptable fault-free alarm rate. Then, faulted performance is analyzed in terms of integrity risk (probability of missed detection or wrong exclusion) and continuity risk (probability of excluding all references) as a function of the size of the error in the faulty measurement. A particular method is recommended on the basis of providing acceptable performance for both integrity and continuity risk.
Published in:	Proceedings of the 54th Annual Meeting of The Institute of Navigation (1998) June 1 - 3, 1998 The Adams Mark Hotel Denver, CO
Pages:	187 - 198
Cite this article:	Updated citation: Published in NAVIGATION: Journal of the Institute of Navigation
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