An Analytical Method for Performance Evaluation of CRPA Based GPS Anti-Jamming Systems

J.H. Lee, Y.S. Choi, S.Y. Lee, S.W. Hwang, S.J. Lee, C.S. Park

Abstract:	GPS is vulnerable to deliberate jamming signals and unintentional interference signals. For counteracting this weakness in GPS, array antenna based anti-jamming methods are studied. For this reason, CRPA System carries out antenna null-steering or beam-forming method by using adaptive array antenna for countermeasure about jamming signals. But performance of CRPA based GPS anti-jamming system is determined according to antenna type and jamming environment. In this paper, CRPA based GPS anti-jamming algorithms and systems were introduced. And proposed performance evaluation methods are explained in accordance with total system view and inter-channel spatial processing view of array system. This paper proposes “GPS satellite signal tracking possible territory”, “performance convergence time of GPS anti-jamming system” and “power spectrum sharpness of MUSIC algorithm” as index about performance evaluation of GPS anti-jamming systems. And software based simulation platform was designed for evaluating performance of CRPA based GPS anti-jamming systems. The proposed evaluation indexes were analyzed in diverse environment.
Published in:	Proceedings of the 27th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS+ 2014) September 8 - 12, 2014 Tampa Convention Center Tampa, Florida
Pages:	2286 - 2290
Cite this article:	Lee, J.H., Choi, Y.S., Lee, S.Y., Hwang, S.W., Lee, S.J., Park, C.S., "An Analytical Method for Performance Evaluation of CRPA Based GPS Anti-Jamming Systems," Proceedings of the 27th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS+ 2014), Tampa, Florida, September 2014, pp. 2286-2290.
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