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2019-01-08

Jamming Method Based on Optimal Power Difference for LMS-GPS Receiver

By Fulai Liu, Yadong Wang, Ling Yue, Xiaodong Kan, and Hui Song
Progress In Electromagnetics Research M, Vol. 77, 167-175, 2019
doi:10.2528/PIERM18111301

Abstract

Jamming and anti-jamming techniques for global position systems (GPS) play important roles in electronic countermeasure. Least mean square (LMS)-based anti-jamming algorithm is widely used in GPS receivers, since it can avoid matrix inversion and has low complexity. For convenience, we call them LMS-GPS receivers. To improve the anti-jamming performance of the LMS-GPS receivers, it is very meaningful to study the jamming technique. Considering that existing jamming signals are easily suppressed by LMS-GPS receivers, a new jamming method named as optimal power difference jamming is proposed in this paper to improve the jamming effect further. Specifically, the analytical relationship between jamming-to-signal ratio (JSR) and the power difference of two interference signals is firstly given. Then, the conclusion that there is always an optimal power difference where the JSR can take the extreme value is drawn. Finally, the optimal power difference is derived as about 22 dB for single-tone interference and 29 dB for band-limited Gaussian noise interference. Simulation results show that the proposed method with optimal power difference is able to improve the JSR remarkably.

Citation


Fulai Liu, Yadong Wang, Ling Yue, Xiaodong Kan, and Hui Song, "Jamming Method Based on Optimal Power Difference for LMS-GPS Receiver," Progress In Electromagnetics Research M, Vol. 77, 167-175, 2019.
doi:10.2528/PIERM18111301
http://www.jpier.org/PIERM/pier.php?paper=18111301

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