基于二次补偿的FDA-MIMO雷达抗主瓣欺骗式干扰方法

doi:10.12305/j.issn.1001-506X.2022.09.09

Abstract

Abstract:

The main-lobe deceptive jammers, which have the same angle as the true target, cannot be distinguished in the spatial domain with the traditional phased array radar system, reducing the performance of target detection seriously. To solve this problem, the method to suppress the mainlobe deceptive jammers based on secondary compensation is proposed with the frequency diversity array multiple input multiple output (FDA-MIMO) radar. Firstly, the forward compensation is performed to the principle range, and the backward compensation is implemented to the range frequency. Hence, the main-lobe deceptive jammers are equivalently moved to the sidelobes of the beampattern. Then, the jammer covariance matrix is obtained by selecting the samples resorting to the singular spectrum analysis technique. Finally, the jammers can be suppressed with adaptive beamforming. The effectiveness of the proposed jammer suppression method is verified by simulation results.

Key words: mainlobe deceptive jammer suppression, frequency diversity array multiple input multiple output (FDA-MIMO) radar, secondary range compensation, singular spectrum analysis

CLC Number:

TN95

Yiqun ZHANG, Lan LAN, Guisheng LIAO, Jingwei XU. Mainlobe deceptive jammer suppression with FDA-MIMO radarbased on secondary compensation[J]. Systems Engineering and Electronics, 2022, 44(9): 2769-2775.

Figures/Tables 9

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参数	取值	参数	取值
工作频率/GHz	16	脉冲重频/kHz	10
发射阵元数	16	接收阵元数	16
发射阵元间距/m	0.018 7	接收阵元间距/m	0.018 7
信噪比/dB	30	目标角度/(°)	0
假目标个数	4	主目标距离门	300
主目标距离数	0	假目标脉冲数	0, 2, 2, 3
假目标1JNR/dB	45	假目标1距离门	310
假目标2JNR/dB	25	假目标2距离门	200
假目标3JNR/dB	20	假目标3距离门	368
假目标4JNR/dB	30	假目标4距离门	334

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Mainlobe deceptive jammer suppression with FDA-MIMO radarbased on secondary compensation

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