Preliminary Experimental Evaluation of LAAS Integrity Methods

Curtis Shively and Kimberly Faunce

Abstract:	The GPS Local Area Augmentation System (LAAS) includes an integrity function to ensure that users are achieving the expected level of accuracy. Two methods previously proposed for integrity of code differential corrections from LAAS ground stations perform comparisons in the pseudorange domain or in the position domain. This paper presents results of experiments using actual satellite signals to evaluate the performance of the two methods. The observed statistical behavior of quantities compared in the methods is presented. Some aspects of this behavior were found to be different from that assumed in previous performance analyses. Consequently, revised geometry (accuracy) criteria for availability of these integrity methods am presented.
Published in:	Proceedings of the 1996 National Technical Meeting of The Institute of Navigation January 22 - 24, 1996 Loews Santa Monica Hotel Santa Monica, CA
Pages:	811 - 823
Cite this article:	Shively, Curtis, Faunce, Kimberly, "Preliminary Experimental Evaluation of LAAS Integrity Methods," Proceedings of the 1996 National Technical Meeting of The Institute of Navigation, Santa Monica, CA, January 1996, pp. 811-823.
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