Dual-stages Fault Detection and Isolation Method for Integrated Navigation System

WU You-long;WANG Xiao-ming;YANG Ling;CAO Peng

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    Published By: Journal Of Ballistics

    CN 32-1343/TJ

Journal Of Ballistics ›› 2013, Vol. 25 ›› Issue (4) : 53.

Dual-stages Fault Detection and Isolation Method for Integrated Navigation System

  • WU You-long1, WANG Xiao-ming1, YANG Ling2, CAO Peng1
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Abstract

The abrupt errors contained in GPS signals influence, or even completely ruin the GPS/INS integrated navigation system.To solve this problem,a dual-stages fault detection and isolation method was proposed.Firstly,the chi-square test was implemented to detect the existence of faults on the whole system level.Then, w test was investigated to identify and isolate faults within each subsystem.Compared with traditional fault detection and isolation methods,the proposed method can reduce the probability of miss-detection and improve the probability of successful identifying faults in each subsystem.The simulation results show that the navigation accuracy and stability of the GPS/INS integration system can be effectively improved by using this proposed method.

Key words

integrated navigation / fault detection and isolation / chi-square test / w test

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WU You-long, WANG Xiao-ming, YANG Ling, CAO Peng. Dual-stages Fault Detection and Isolation Method for Integrated Navigation System. Journal Of Ballistics. 2013, 25(4): 53

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