基于FDA-MIMO雷达的主瓣SMSP干扰空时域联合抑制方法

doi:10.12305/j.issn.1001-506X.2022.07.11

Abstract

Abstract:

The main-beam jamming is located in the same width as the target, which greatly reduces the detection and tracking performance of the radar. It is also difficult to suppress it at the beam level. The smeared spectrum (SMSP) jamming from the main beam can cover the target signal in the time and frequency domain and form multiple false targets with deception effect in the airspace. To solve this problem, a space-time joint suppression method is proposed based on frequency diverse array multiple-input and multiple-output radar, Firstly, the blind source separation algorithm is used to separate the target and the jamming in different channels. After obtaining the target range information, range-angle joint beamforming is carried out to improve the input signal to jamming and noise ratio. This method can effectively suppress the main-beam SMSP jamming without a prior range information of the target, which has good applicability. Simulation results show the effectiveness of the proposed method.

Key words: main-beam smeared spectrum (SMSP) jamming, frequency diverse array (FDA), blind source separation (BSS), range-angle joint beamforming

CLC Number:

TN958.5

Yingjian ZHAO, Bo TIAN, Chunyang WANG, Jian GONG, Ming TAN, Changlin ZHOU. Space-time joint suppression method of main-beam SMSP jamming based on FDA-MIMO radar[J]. Systems Engineering and Electronics, 2022, 44(7): 2157-2165.

Figures/Tables 13

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参数	数值	参数	数值
发射阵元数	12	脉冲宽度/μs	50
接收阵元数	12	目标角度/(°)	0
载频/GHz	3	信噪比/dB	10
频偏增量/kHz	3	干扰子脉冲数	5
带宽/MHz	5	干扰距离/km	101
发射阵元间距/m	0.05	干噪比/dB	30
接收阵元间距/m	0.05	干扰角度/(°)	0
调频斜率/(GHz·s^-1)	10	参考距离/km	100
目标距离/km	100	参考窗宽/μs	100

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Space-time joint suppression method of main-beam SMSP jamming based on FDA-MIMO radar

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