Evaluation of Estimation RAIM Concepts

H. James Rome and John H. Kraemer

Abstract:	This paper evaluates the use of a Kalman filter for improving RAIM. Estimates of satellite clock offsets become the test statistics. It is found that, for a snapshot algorithm, there is no difference between conventional, parity space RAIM and that based on the Kalman filter. When time histories are used and the satellite offsets are modeled as ramps, it is found that there is improvement when the slope of the ramp offset is greater than about 6m/sec. If a crude inertial navigation system were included, it is possible to have significant improvement when fault producing ramps take as long as 3 minutes to develop.
Published in:	Proceedings of the 53rd Annual Meeting of The Institute of Navigation (1997) June 30 - 2, 1997 Albuquerque, NM
Pages:	337 - 350
Cite this article:	Rome, H. James, Kraemer, John H., "Evaluation of Estimation RAIM Concepts," Proceedings of the 53rd Annual Meeting of The Institute of Navigation (1997), Albuquerque, NM, June 1997, pp. 337-350.
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