基于乘积调制的SAR灵巧干扰方法

doi:10.12305/j.issn.1001-506X.2021.11.15

系统工程与电子技术 ›› 2021, Vol. 43 ›› Issue (11): 3160-3168.doi: 10.12305/j.issn.1001-506X.2021.11.15

基于乘积调制的SAR灵巧干扰方法

黄大通¹, 邢世其^1,*, 李永祯¹, 刘业民², 肖顺平¹

1. 国防科技大学电子信息系统复杂电磁环境效应国家重点实验室, 湖南长沙 410073
2. 中国人民解放军第32579部队, 广西桂林 541001

收稿日期:2020-10-29 出版日期:2021-11-01 发布日期:2021-11-12
通讯作者: 邢世其
作者简介:黄大通(1993—), 男, 博士研究生, 主要研究方向为合成孔径雷达信号处理与对抗|邢世其(1984—), 男, 副研究员, 博士, 主要研究方向为极化雷达成像、雷达信号处理以及合成孔径雷达对抗|李永祯(1976—), 男, 教授, 博士研究生导师, 博士, 主要研究方向为极化雷达信号处理、雷达电子对抗|刘业民(1982—), 男, 工程师, 博士, 主要研究方向为雷达干扰与反干扰、极化雷达信号处理|肖顺平(1964—), 男, 教授, 博士研究生导师, 博士, 主要研究方向为极化信息处理、电子仿真与雷达目标识别、雷达电子对抗
基金资助:
国家自然科学基金(61971429)

Smart jamming method against SAR based on multiplication modulation

Datong HUANG¹, Shiqi XING^1,*, Yongzhen LI¹, Yemin LIU², Shunping XIAO¹

1. State Key Laboratory of Complex Electromagnetic Environment Effects on Electronics and Information System, National University of Defense Technology, Changsha 410073, China
2. Unit 32579 of the PLA, Guilin 541001, China

Received:2020-10-29 Online:2021-11-01 Published:2021-11-12
Contact: Shiqi XING

摘要/Abstract

摘要：

噪声乘积调制不仅能获得雷达处理增益, 还能自动瞄准信号频率, 被广泛应用于目标突防等重要作战场景。借鉴其基本原理, 提出了对合成孔径雷达(synthetic aperture radar, SAR)的乘积调制灵巧干扰方法, 在不改变截获信号调制流程的基础上, 仅通过线下模板设计, 即可灵活选择压制或欺骗的不同干扰效果。首先建立了干扰信号模型, 推导分析了其成像结果, 继而详细阐述了调制模板的生成方法; 最后, 从理论上分析了干扰的性能情况。仿真结果表明, 所提的干扰方法能仅通过设计不同的调制模板即可实现场景压制或虚假目标欺骗, 干扰效果对侦察精度的依赖性较小, 干扰调制流程简单高效, 便于工程实践。

关键词: 合成孔径雷达, 乘积调制, 二维滤波, 频域采样, 灵巧干扰

Abstract:

Noise multiplication modulation can not only obtain radar signal processing gain, but also aim at the frequency of radar signal automatically, which has been widely used in many important battlefield scenarios, such as target penetration. By applying its basic principle, a smart jamming method against synthetic aperture radar (SAR) is proposed, which is based on multiplication modulation. Without modifying the modulation procedures of intercepted signal, the proposed jamming method an produce suppression or deception jamming flexibly by the offline design of the modulation template. Firstly, the jamming signal model is established and its imaging result is deduced. Then, the generation method of modulation template is explained in detail. Finally, the jamming performance is analyzed theoretically. Simulation results demonstrate that only by the design of modulation template can the proposed jamming method achieve scenario suppression or false target deception. The jamming results have little dependence on reconnaissance precision. The modulation procedures are simple and effective, which is convenient for engineering practice.

Key words: synthetic aperture radar (SAR), multiplication modulation, two-dimensional filtering, frequency domain sampling, smart jamming

中图分类号:

TN95

黄大通, 邢世其, 李永祯, 刘业民, 肖顺平. 基于乘积调制的SAR灵巧干扰方法[J]. 系统工程与电子技术, 2021, 43(11): 3160-3168.

Datong HUANG, Shiqi XING, Yongzhen LI, Yemin LIU, Shunping XIAO. Smart jamming method against SAR based on multiplication modulation[J]. Systems Engineering and Electronics, 2021, 43(11): 3160-3168.

图/表 9

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干扰参数		功率增益/dB
模板快时间单边带宽/MHz	模板慢时间单边带宽/Hz	理论值	实验值
18.9	283	5.740 3	5.564 9
14.1	188	8.768 1	8.701 5
10.4	112	12.346 8	12.257 2
2.4	94	19.573 0	19.386 3

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基于乘积调制的SAR灵巧干扰方法

Smart jamming method against SAR based on multiplication modulation

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