Fault Detection and Exclusion Using Normalized Solution Separation Methods

Ryan S.Y. Young and Gary A. McGraw

Abstract:	To meet the navigational integrity required for civil aviation applications, the GPS fault detection and exclusion (FDE) function is of considerable importance. In this paper, we propose a new FDE approach for tightly integrated GPS/inertial sensors that combines a normalized solution separation for fault detection and a residual monitoring scheme for fault exclusion. The computation of the detection threshold, the horizontal protection level (HPL) and the horizontal uncertainty level (HUL) will be discussed and simulation results will be presented. We also develop a FDE algorithm for snapshot navigation methods based on a normalized solution separation scheme. This topic is of interest not only as a limiting case for the general filter problem but also from a purely technical perspective. The normalized solution separation method is shown to be equivalent to other snapshot FDE algorithms.
Published in:	Proceedings of the 15th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 2002) September 24 - 27, 2002 Oregon Convention Center Portland, OR
Pages:	565 - 578
Cite this article:	Young, Ryan S.Y., McGraw, Gary A., "Fault Detection and Exclusion Using Normalized Solution Separation Methods," Proceedings of the 15th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 2002), Portland, OR, September 2002, pp. 565-578.
Full Paper:	ION Members/Non-Members: 1 Download Credit Sign In