Journal of Systems Engineering and Electronics ›› 2025, Vol. 36 ›› Issue (5): 1169-1176.doi: 10.23919/JSEE.2025.000005

• DEFENCE ELECTRONICS TECHNOLOGY • Previous Articles    

Jamming suppression by blind source separation: from a perspective of spatial band-pass filters

Quanhua LIU(), Xinran SUI(), Xinliang CHEN(), Zhennan LIANG(), Rui ZHU()   

  • Received:2024-07-10 Accepted:2024-12-03 Online:2025-10-18 Published:2025-10-24
  • Contact: Xinliang CHEN E-mail:liuquanhua@bit.edu.cn;sxr051@yeah.net;chenxinliang@bit.edu.cn;liangzhennan@bit.edu.cn;zhurui_bit2020@bit.edu.cn
  • About author:
    LIU Quanhua was born in 1982. He received his B.S. degree in telecommunications engineering from Beijing Information Technology Institute, Beijing, China, in 2005, and Ph.D. degree in target detection and recognition from Beijing Institute of Technology (BIT), Beijing, China, in 2010. From 2010 to 2011, he was a post-doctoral researcher with the Antenna and Microwave Laboratory, The University of Tennessee, Knoxville, TN, USA. Since 2011, he has been a faculty member with BIT, where he is currently a full professor. His research interests include wideband radar signal processing and distributed array radar system. E-mail: liuquanhua@bit.edu.cn

    SUI Xinran was born in 1998. He received his B.E. degree in electronic and information engineering at Beijing Institute of Technology (BIT), Beijing, China, in 2021. He is currently pursing his M.S. degree at BIT. His research interests include distributed array radar signal processing and jamming suppression. E-mail: sxr051@yeah.net

    CHEN Xinliang was born in 1984. He received his B.E. degree in electrical science and technology from the School of Physics Science and Technology, Wuhan University, in 2005, and Ph.D. degree from the Institute of Semiconductor, Chinese Academic of Sciences, in 2010. He was a postdoctoral researcher with the School of Information and Electronics, Beijing Institute of Technology (BIT) from 2010 to 2012. He joined BIT in 2012 as a lecturer. His research interests include radar signal processing and radar target detection. E-mail: chenxinliang@bit.edu.cn

    LIANG Zhennan was born in in 1992. He received his B.S. degree in electronic science and engineering from Southeast University, Nanjing, China, in 2014, and Ph.D. degree from the School of Information and Electronics, Beijing Institute of Technology (BIT), Beijing, China, in 2020. From 2020, he was a post-doctoral researcher at BIT. At present, he is an assistant professor with BIT. His research interests include digital phased array radar system and wideband radar signal processing. E-mail: liangzhennan@bit.edu.cn

    ZHU Rui was born in 1989. He received his B.S. degree in electronics engineering from Tsinghua University, Beijing, China, in 2011, and M.S. and Ph.D. degrees in electrical engineering from the University of California at Los Angeles, Los Angeles, CA, USA, in 2013 and 2017, respectively. From 2017 to 2020, he was a principal engineer at Axend Inc., Los Angeles. From 2020 to 2022, he was a postdoctoral researcher with the School of Information and Electronics, Beijing Institute of Technology (BIT). Since 2023, he has been an assistant professor with the School of Information and Electronics, BIT. His research interests include radio frequency front-end monolithic microwave integrated design, antenna array, and distributed radar systems. E-mail: zhurui_bit2020@bit.edu.cn
  • Supported by:
    This work was supported by the National Natural Science Foundation of China (62371046; 62201048), and the Natural Science Foundation of Chongqing, China (cstc2020jcyj-msxmX0260).

Abstract:

Jamming suppression is traditionally achieved through the use of spatial filters based on array signal processing theory. In order to achieve better jamming suppression performance, many studies have applied blind source separation (BSS) to jamming suppression. BSS can achieve the separation and extraction of the individual source signals from the mixed signal received by the array. This paper proposes a perspective to recognize BSS as spatial band-pass filters (SBPFs) for jamming suppression applications. The theoretical derivation indicates that the processing of mixed signals by BSS can be perceived as the application of a set of SBPFs that gate the source signals at various angles. Simulations are performed using radar jamming suppression as an example. The simulation results suggest that BSS and SBPFs produce approximately the same effects. Simulation results are consistent with theoretical derivation results.

Key words: blind source separation (BSS), jamming suppression, spatial filtering