EPC-MIMO雷达主瓣距离欺骗式干扰抑制方法

doi:10.12305/j.issn.1001-506X.2023.03.09

Abstract

Abstract:

The mainlobe distance deceptive jamming will have a great impact on the estimation accuracy of real targets and the accuracy of target tracking. Based on element pulse coding-multiple input multiple output (EPC-MIMO) radar, an algorithm for suppressing mainlobe range deception jamming is proposed when the pulse repetition frequency (PRF) of mainlobe range deception jamming is greater than or equal to the repetition frequency of two transmitted pulses. In the mainlobe range jamming suppression algorithm of EPC-MIMO radar, firstly, the linear frequency modulation (LFM) signal is used to measure and correct the amplitude and phase errors of the transmitter receiver channel in the radar system. Secondly, by analyzing the pulse signal difference between the true and false targets in the radar echo, the echo of EPC-MIMO radar is matched and separated, so as to obtain the law of repeater jamming; Finally, the radar echo is screened to suppress false targets. Through the analysis of radar measured data, it is verified that this method can effectively solve the problem of mainlobe range deception jamming suppression and improve the anti-jamming performance of radar in complex electromagnetic environment.

Key words: mainlobe range deceptive jamming, element pulse coding multiple input multiple output (EPC-MIMO) radar, amplitude and phase error correction of radar transmit receive channel signal

CLC Number:

TN953

Yuhao ZHANG, Shengqi ZHU, Cao ZENG, Sen CUI, Qijian SHI. Mainlobe range deceptive jamming suppression approach with EPC-MIMO radar[J]. Systems Engineering and Electronics, 2023, 45(3): 690-698.

Figures/Tables 10

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References 29

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参数	数值	参数	数值
发射阵元M	16	发射阵元N	16
PRF/kHz	10	转发延迟ζ/kHz	20
目标距离/km	0.55	目标角度/(°)	0
假目标1距离/km	1.5	假目标1角度/(°)	0
假目标2距离/km	2.0	假目标2角度/(°)	0
假目标3距离/km	2.5	假目标3角度/(°)	0
假目标4距离/km	3.0	假目标4角度/(°)	0
假目标5距离/km	3.5	假目标5角度/(°)	0

参数名称	取值	参数名称	取值
目标距离/km	0.567	目标速度/(km/s)	2.240
假目标1距离/km	1.490	假目标1速度/(km/s)	28.19
假目标2距离/km	1.995	假目标2速度/(km/s)	28.19
假目标3距离/km	2.501	假目标3速度/(km/s)	28.19
假目标4距离/km	3.005	假目标4速度/(km/s)	28.19
假目标5距离/km	3.509	假目标5速度/(km/s)	28.19

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Mainlobe range deceptive jamming suppression approach with EPC-MIMO radar

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