Title: Space-time adaptive processing anti-jamming algorithm for navigation receiver

Authors: Yufeng Li; Shiyu Gu; Weiping Zhao; Yufeng Huang

Addresses: College of Electronic Information Engineering, Shenyang Aerospace University, Shenyang 110000, China ' College of Electronic Information Engineering, Shenyang Aerospace University, Shenyang 110000, China ' College of Electronic Information Engineering, Shenyang Aerospace University, Shenyang 110000, China ' College of Electronic Information Engineering, Shenyang Aerospace University, Shenyang 110000, China

Abstract: For the problem that the satellite navigation signal is easily interfered, the anti-jamming technology of the traditional navigation receiver usually needs the direction of arrival (DOA) of the navigation signal. This paper proposes an anti-jamming method combining spatial projection and beamforming techniques. The method first constructs the orthogonal complement space of the interference subspace, and then projects the space-time signal vector receives by the antenna array onto it, and then uses the algorithm with strictly constrained minimum power sampling matrix gradient (CSMG) to project the output signal after beamforming in a fixed direction, and finally capture, locate, and solve the interference-free data obtained after beamforming. In this paper, the method is deduced theoretically and the relevant simulation experiments are completed. It shows that the anti-jamming algorithm not only can effectively suppress the interference signal, but also can better retain the desired signal.

Keywords: navigation signal; anti-jamming; subspace projection; beamforming.

DOI: 10.1504/IJSN.2020.109711

International Journal of Security and Networks, 2020 Vol.15 No.3, pp.155 - 163

Received: 28 Dec 2019
Accepted: 06 Jan 2020
Published online: 21 Sep 2020 *

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