基于BSS的FDA-MIMO雷达主瓣欺骗式干扰抑制方法

doi:10.3969/j.issn.1001-506X.2020.09.07

系统工程与电子技术 ›› 2020, Vol. 42 ›› Issue (9): 1927-1934.doi: 10.3969/j.issn.1001-506X.2020.09.07

基于BSS的FDA-MIMO雷达主瓣欺骗式干扰抑制方法

高霞¹(), 全英汇¹(), 李亚超²(), 朱圣棋²(), 邢孟道²()

1. 西安电子科技大学电子工程学院, 陕西西安 710071
2. 西安电子科技大学雷达信号处理国家重点实验室, 陕西西安 710071

收稿日期:2019-12-10 出版日期:2020-08-26 发布日期:2020-08-26
作者简介:高霞(1996-),女,硕士研究生,主要研究方向为雷达信号处理。E-mail:2636897970@qq.com|全英汇(1981-),男,教授,博士研究生导师，博士,主要研究方向为雷达实时信号处理。E-mail:yhquan@mail.xidian.edu.cn|李亚超(1980-),男,教授,博士研究生导师，博士,主要研究方向为雷达成像和实时信号处理。E-mail:ycli@mail.xidian.edu.cn|朱圣棋(1984-),男,教授,博士研究生导师，博士,主要研究方向为高速平台雷达多目标检测。E-mail:sqzhu@mail.xidian.edu.cn|邢孟道(1974-),男,教授,博士研究生导师，博士,主要研究方向为SAR/ISAR成像和动目标检测。E-mail:mdxing@mail.xidian.edu.cn
基金资助:
国家自然科学基金(61772397);国家自然科学基金(61303035);国家自然科学基金(61471283);西安电子科技大学研究生创新基金资助课题

Main-lobe deceptive jamming suppression with FDA-MIMO radar based on BSS

Xia GAO¹(), Yinghui QUAN¹(), Yachao LI²(), Shengqi ZHU²(), Mengdao XING²()

1. School of Electronic Engineering, Xidian University, Xi'an 710071, China
2. National Key Laboratory of Radar Signal Processing, Xidian University, Xi'an 710071, China

Received:2019-12-10 Online:2020-08-26 Published:2020-08-26

摘要/Abstract

摘要：

主瓣欺骗式干扰与目标位于同一个波束宽度内,严重影响了雷达对真实目标的检测与参数估计。针对此问题,基于频率分集阵列-多输入多输出(frequency diversity array multiple input multiple output, FDA-MIMO)雷达,提出了一种抑制主瓣欺骗式干扰的方法。所提方法的主要突破点在于,当干扰和目标的角度完全相同时,利用FDA-MIMO雷达天线方向图的距离-角度二维依赖性,进一步通过基于最大信噪比(maximum signal to noise ratio, MSNR)的盲源分离(blind source separation, BSS)算法将干扰和目标分离在不同的通道,以达到抑制干扰的目的。该方法无需目标的距离、角度先验信息。仿真实验验证了所提算法的有效性,当干噪比(jamming to noise ratio, JNR)为80 dB时,目标的正确检测概率约为0.98。

关键词: 主瓣欺骗式干扰, 频率分集陈列-多输入多输出雷达, 距离-角度二维依赖性, 盲源分离

Abstract:

The main-lobe deceptive jamming is located in the same beam width as the target does, which seriously affects the detection and parameter estimation of the real target. To solve this problem, a method to suppress the main-lobe deceptive jamming is proposed based on the frequency diversity array multiple input multiple output (FDA-MIMO) radar. The main breakthrough of the proposal is that when the angles of the jamming and the target are exactly identical, the distance-angle 2D dependence of the antenna pattern of the FDA-MIMO radar is available. Further, the blind source separation (BSS) algorithm based on the maximum signal to noise ratio (MSNR) is applied to separate the deceptive jamming from the target in different channels, so as to achieve the purpose of jamming suppression. This method does not need the prior information of the distance and the angle of the target. The simulation results verify the effectiveness of the proposed algorithm, and when the jamming to noise ratio (JNR) is 80 dB, the correct detection probability of the target is about 0.98.

Key words: main-lobe deceptive jamming, frequency diversity array multiple input multiple output radar (FDA-MIMO), range-angle 2D dependence, blind source separation (BSS)

中图分类号:

TN957.51

高霞, 全英汇, 李亚超, 朱圣棋, 邢孟道. 基于BSS的FDA-MIMO雷达主瓣欺骗式干扰抑制方法[J]. 系统工程与电子技术, 2020, 42(9): 1927-1934.

Xia GAO, Yinghui QUAN, Yachao LI, Shengqi ZHU, Mengdao XING. Main-lobe deceptive jamming suppression with FDA-MIMO radar based on BSS[J]. Systems Engineering and Electronics, 2020, 42(9): 1927-1934.

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参数	取值
带宽/MHz	24
参考载频/GHz	14
频率增量/kHz	20
目标距离/km	4.1
干扰个数/个	5
干扰角度/(°)	[-2.5, -0.5, 1, 1.8, 2.5]
脉宽/μs	4
脉冲重复频率/kHz	25
阵元个数/个	20
目标角度/(°)	0
干噪比/dB	80
干扰距离/km	[-6, -1, 8, 14, 16]

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基于BSS的FDA-MIMO雷达主瓣欺骗式干扰抑制方法

Main-lobe deceptive jamming suppression with FDA-MIMO radar based on BSS

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