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A New Relative Receiver Autonomous Integrity Monitoring Algorithm for Multiple Failures

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Authors
Yun, Ho; Han, Deokhwa; Song, Hongki; Lee, Sungyong; Kee, Changdon
Issue Date
2012-11-02
Publisher
CPGPS외 2 (http://www.gpsgnss2012.com)
Citation
International Symposium on GPS/GNSS 2012
Keywords
공학Multiple failuresFDEIntegrity monitoringRRAIM
Description
authors' final manuscript
Abstract
In near future, GNSS GPS modernization, renewed GLONASS and a new Galileo
signal will be available. And the accuracy of position solution will be better by
courtesy of improved quality of ranging signal. As an expected accuracy is better,
the threshold for failure will be reduced. As a result, the prior probability of failures
could be larger than what is used now. Due to the increased prior probability
of failures, probability of simultaneous multiple failures cannot be neglected any
more. Furthermore there will be many more ranging sources makes it necessary to
consider the possibility of simultaneous multiple failures. This paper develops and
analyzes a new Relative Receiver Autonomous Integrity Monitoring (RRAIM) algorithm
which can treat no only a single failure but also simultaneous multiple
failures. A proposed algorithm uses measurement residuals and satellite observation
matrices of several consecutive epochs for Failure Detection and Exclusion
(FDE). It detects failures by monitoring the error vector itself instead of monitoring
the projection of the error vector. The simulation results show that the algorithm
is able to detect any instance of multiple failures which are not detected by
the conventional RAIM algorithm.
Language
English
URI
https://hdl.handle.net/10371/81504
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