GNSS array receiver faced with overloaded interferences: anti-jamming performance and the incident directions of interferences

doi:10.23919/JSEE.2022.000072

Journal of Systems Engineering and Electronics ›› 2023, Vol. 34 ›› Issue (2): 335-341.doi: 10.23919/JSEE.2022.000072

• DEFENCE ELECTRONICS TECHNOLOGY • Previous Articles

GNSS array receiver faced with overloaded interferences: anti-jamming performance and the incident directions of interferences

Jie WANG¹^,²^,*(), Wenxiang LIU¹(), Feiqiang CHEN¹(), Zukun LU¹(), Gang OU¹()

¹ College of Electronic Science, National University of Defense Technology, Changsha 410073, China
² College of Electronic Engineering, National University of Defense Technology, Hefei 230031, China

Received:2021-09-06 Online:2023-04-18 Published:2023-04-18
Contact: Jie WANG E-mail:wangjiefjj@163.com;liuwenxiang8888@163.com;matlabfly@hotmail.com;luzukun@nudt.edu.cn;ougangcs@139.com
About author:
WANG Jie was born in 1989. He received his M.S. degree in Xi’an High Technology University in 2015. Currently he is a Ph.D. student and a lecturer in National University of Defense Technology, Changsha, China. His research interests are array signal process and robust navigation. E-mail: wangjiefjj@163.com

LIU Wenxiang was born in 1981. He received his M.S. and Ph.D. degrees in electronic science and technology from National University of Defense Technology in 2008 and 2011, respectively. Currently he is a teacher in the College of Electronic Science, National University of Defense Technology, Changsha, China. His research interests include precise positioning and system simulation. E-mail: liuwenxiang8888@163.com

CHEN Feiqiang was born in 1988. He received his M.S. and Ph.D. degrees in electronic science and technology from National University of Defense Technology in 2012 and 2017, respectively. Currently he is a teacher in the College of Electronic Science, National University of Defense Technology, Changsha, China. His research interests include array antennas design and anti-jammer technology. E-mail: matlabfly@hotmail.com

LU Zukun was born in 1989. He received his Ph.D. degree in electronic science and technology from National University of Defense Technology in 2017. Currently he is a teacher in the College of Electronic Science, National University of Defense Technology, Changsha, China. His research interests include array antennas design and anti-jamming technology. E-mail: luzukun@nudt.edu.cn

OU Gang was born in 1969. He received his M.S. and Ph.D. degrees from the College of Electronic Science and Engineering, National University of Defense Technology, Changsha, China. He is currently a professor with the College of Electronic Science, National University of Defense Technology, Changsha. His research interests include high-precision GNSS positioning and timing. E-mail: ougangcs@139.com
Supported by:
This work was supported by the National Natural Science Foundation of China (62003354)

Abstract

Abstract:

Anti-jamming solutions based on antenna arrays enhance the anti-jamming ability and the robustness of global navigation satellite system (GNSS) receiver remarkably. However, the performance of the receiver will deteriorate significantly in the overloaded interferences scenario. We define the overloaded interferences scenario as where the number of interferences is more than or equal to the number of antenna arrays elements. In this paper, the effect mechanism of interferences with different incident directions is found by studying the anti-jamming performance of the adaptive space filter. The theoretical analysis and conclusions, which are first validated through numerical examples, reveal the relationships between the optimal weight vector and the eigenvectors of the input signal autocorrelation matrix, the relationships between the interference cancellation ratio (ICR), the signal to interference and noise power ratio (SINR) of the adaptive space filter output and the number of interferences, the eigenvalues of the input signal autocorrelation matrix. In addition, two simulation experiments are utilized to further corroborate the theoretical findings through soft anti-jamming receiver. The simulation results match well with the theoretical analysis results, thus validating the effect mechanism of overloaded interferences. The simulation results show that, for a four elements circular array, the performance difference is up to 19 dB with different incident directions of interferences. Anti-jamming performance evaluation and jamming deployment optimization can obtain more accurate and efficient results by using the conclusions.

Key words: antenna arrays, anti-jamming, overloaded interferences, incident direction

Jie WANG, Wenxiang LIU, Feiqiang CHEN, Zukun LU, Gang OU. GNSS array receiver faced with overloaded interferences: anti-jamming performance and the incident directions of interferences[J]. Journal of Systems Engineering and Electronics, 2023, 34(2): 335-341.

Figures/Tables 6

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References 17

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GNSS array receiver faced with overloaded interferences: anti-jamming performance and the incident directions of interferences

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