User Level Integrity Monitoring and Quality Control for Seamless Positioning in all Conditions and Environments

Washington Y. Ochieng, Shaojun Feng, Terry Moore,Chris Hill and Chris Hide

Abstract:	This paper presents the research undertaken to date to develop sensor level autonomous integrity monitoring and quality control to support centimetre level positioning in all conditions and environments as conceived under the SPACE (Seamless Positioning in All Conditions and Environments) project. The basic philosophy for integrity monitoring and quality control is early detection of anomalies which requires monitoring of the entire processing chain. A number of novel concepts and algorithms are developed including algorithms to deal with special issues associated with carrier phase based integrity monitoring (including integration with inertial navigation systems), a new “difference test” integrity monitoring algorithm for detection of slowly growing errors, and a new group separation method for simultaneous multiple failure exclusion. Both real and simulated data are used to test the new algorithms. The results show that the new algorithms, when used together with selected existing ones, provide effective integrity monitoring and quality control for centimetre level seamless positioning in all conditions and environments.
Published in:	Proceedings of the 20th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS 2007) September 25 - 28, 2007 Fort Worth Convention Center Fort Worth, TX
Pages:	2573 - 2583
Cite this article:	Ochieng, Washington Y., Feng, Shaojun, Moore, Terry, Hill, Chris, Hide, Chris, "User Level Integrity Monitoring and Quality Control for Seamless Positioning in all Conditions and Environments," Proceedings of the 20th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS 2007), Fort Worth, TX, September 2007, pp. 2573-2583.
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