RAIM- an Implementation Study

J.M. Brown, H. Schwartz, D. Kolody

Abstract:	Over the past 2-3 years the commercial airline community has been actively searching (notably through RTGA Special Committee SG-159) for a method of assuring the integrity of the GPS position fix. The motivation is obvious and undetected error could cost many lives. So far, two broad techniques have been identified: GIG and RAlM. The implementation of GIG appears to be some distance In the future, while RAIM is much more immediate. As an active GPS manufacturer and supplier to the airline community, we at Canadian Marconi feel that a practical, effective RAIM algorithm must be identified and Implemented quickly. Therefore, in collaboration with Carleton University in Ottawa, we have conducted a review of potential RAIM methods with a view to Incorporate one (or more) into our GPS receivers. Of special concern to us are software complexity, CPU processing load and the effects of aircraft dynamics and S/A on the probability of false alarm, probability of false dismissal and time-to-alarm of the selected algorithm(s). This paper will report on our progress to date, including algorithm selection, simulation environment, experimental set-up, test results and recommendations.
Published in:	Proceedings of the 2nd International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 1989) September 27 - 29, 1989 The Broadmoor Hotel Colorado Spring, CO
Pages:	379 - 388
Cite this article:	Brown, J.M., Schwartz, H., Kolody, D., "RAIM- an Implementation Study," Proceedings of the 2nd International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 1989), Colorado Spring, CO, September 1989, pp. 379-388.
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