PERFORMANCE ANALYSIS OF A TIGHTLY COUPLED GPS/INERTIAL SYSTEM FOR TWO INTEGRITY MONITORING METHODS

Young C. Lee and Daniel G. O’Laughlin

Peer Reviewed

Abstract:	Use of an integrated GPS/inertial system can be effective in mitigating the effects of GPS signal interference, such as intentional jamming. Currently the GPS Inertial Working Group of RTCA Special, () Committee SC -159 is developing requirements and test procedures for a tightly coupled GPS inertial system. This paper investigates two of the key issues being addressed by the working group. The first is how well a tightly coupled GPS inertial system can detect slowly growing errors. The paper investigates this issue for two integrity monitoring methods. The second issue relates to how long the system can coast upon complete loss of GPS signals caused by interference. Using analytic formulas, the paper determines maximum coasting times possible under various scenarios.
Published in:	NAVIGATION: Journal of the Institute of Navigation, Volume 47, Number 3
Pages:	175 - 190
Cite this article:	Lee, Young C., O’Laughlin, Daniel G., "PERFORMANCE ANALYSIS OF A TIGHTLY COUPLED GPS/INERTIAL SYSTEM FOR TWO INTEGRITY MONITORING METHODS", NAVIGATION: Journal of The Institute of Navigation, Vol. 47, No. 3, Fall 2000, pp. 175-190.
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