Using a GPS Receiver Monte Carlo Simulator to Predict RF Interference Performance

Phillip W. Ward

Abstract:	The jamming-to-signal power ratio (J/S) performance of a GPS receiver depends not only on the received signal power, but also on the tracking threshold performance of the receiver. One of the most powerful analytical tools for evaluating the tracking threshold performance of a GPS of-receiver is a GPS receiver Monte Carlo simulator. This paper describes how a GPS receiver is modeled for Monte Carlo simulation purposes. The critical design para- meters of a GPS receiver design are described in the paper and included in the model. Several representative receiver code and carrier tracking loop design examples are simu- lated and the tracking threshold results for representative dynamic stress conditions are presented. The Monte Carlo simulation results are compared to the results which can be obtained by rule-of-thumb receiver threshold analysis techniques. The rule-of-thumb thresholds and the analysis techniques are included in the paper. RF interference analysis techniques using receiver threshold performance are also described and used in the comparisons.
Published in:	Proceedings of the 10th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 1997) September 16 - 19, 1997 Kansas City, MO
Pages:	1473 - 1482
Cite this article:	Ward, Phillip W., "Using a GPS Receiver Monte Carlo Simulator to Predict RF Interference Performance," Proceedings of the 10th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 1997), Kansas City, MO, September 1997, pp. 1473-1482.
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