基于相位调制的雷达抗假目标干扰方法

doi:10.12305/j.issn.1001-506X.2021.09.14

系统工程与电子技术 ›› 2021, Vol. 43 ›› Issue (9): 2476-2483.doi: 10.12305/j.issn.1001-506X.2021.09.14

基于相位调制的雷达抗假目标干扰方法

王晓戈, 陈辉*, 倪萌钰, 倪柳柳, 李槟槟

空军预警学院雷达兵器运用工程重点实验室, 湖北武汉 430019

收稿日期:2020-05-27 出版日期:2021-08-20 发布日期:2021-08-26
通讯作者: 陈辉
作者简介:王晓戈(1996—), 男, 助教, 硕士研究生, 主要研究方向为阵列信号处理|陈辉(1974—), 男, 教授, 博士, 主要研究方向为阵列信号处理|倪萌钰(1994—), 女, 助教, 博士研究生, 主要研究方向为阵列信号处理|倪柳柳(1991—), 男, 助教, 博士研究生, 主要研究方向为阵列信号处理|李槟槟(1990—), 男, 讲师, 博士, 主要研究方向为极化敏感阵列信号处理
基金资助:
国家自然科学基金(62001510)

Radar anti-false target jamming method based on phase modulation

Xiaoge WANG, Hui CHEN*, Mengyu NI, Liuliu NI, Bingbing LI

Key Research Laboratory, Air Force Early Warning Academy, Wuhan 430019, China

Received:2020-05-27 Online:2021-08-20 Published:2021-08-26
Contact: Hui CHEN

摘要/Abstract

摘要：

针对欺骗式干扰难分辨和难去除的问题, 基于相参积累的原理, 提出一种基于相位调制(Phase Modulation, PM)的雷达抗假目标干扰方法。首先, 雷达发射相位调制的脉冲串信号, 之后根据相位的先验信息在接收时对回波信号进行相位补偿。然后，对回波信号进行脉冲压缩和相参积累, 在处理后形成的距离-多普勒图上对真、假目标进行分辨并提取出目标的多普勒频率。最后，结合自适应波束形成原理以及真实目标的多普勒频率信息, 设计自适应多普勒滤波器, 对回波脉冲串进行处理, 使真目标得到增强, 并在假目标的多普勒频率处形成零陷, 解决了假目标难去除的问题。仿真实验表明, 所提方法能有效分辨并去除回波信号中的假目标。

关键词: 雷达, 抗干扰, 假目标, 相位调制, 相参积累

Abstract:

Aiming at the problem that deception jamming is difficult to distinguish and eliminate, based on the priciple of coherent accumulation, a method of radar anti-false target jamming based on phase modulation (PM) is proposed in this paper. Firstly, the radar transmits the phase modulated pulse train signal. Then, according to the prior information of the phase, the radar compensates the phase of the echo signal when it is received. secondly, the echo signal carries out pulse compression and coherent accumulation. After processing, the range-Doppler (R-D) diagram is used to distinguish the real and false target and extract the Doppler frequency of the real target. Finally, according to the adaptive beamforming theory and the Doppler frequency information of the real target, an adaptive Doppler filter is designed to process the echo pulse train to enhance the real target and form a null at the Doppler frequency of the false target. The problem that the false target is difficult to be eliminated is solved. Simulation results show that the proposed method can effectively distinguish and eliminate false targets in the echo signal.

Key words: radar, anti-interference, false target, phase modulation, coherent accumulation

中图分类号:

TN973

王晓戈, 陈辉, 倪萌钰, 倪柳柳, 李槟槟. 基于相位调制的雷达抗假目标干扰方法[J]. 系统工程与电子技术, 2021, 43(9): 2476-2483.

Xiaoge WANG, Hui CHEN, Mengyu NI, Liuliu NI, Bingbing LI. Radar anti-false target jamming method based on phase modulation[J]. Systems Engineering and Electronics, 2021, 43(9): 2476-2483.

图/表 7

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基于相位调制的雷达抗假目标干扰方法

Radar anti-false target jamming method based on phase modulation

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