一种反多通道对消的多干扰机协同干扰方法

邢世其; 黄大通; 徐伟; 李永祯; 肖顺平

doi:10.11999/JEIT210610

一种反多通道对消的多干扰机协同干扰方法

doi: 10.11999/JEIT210610

邢世其¹,
黄大通^1, ,,
徐伟^{1, 2},
李永祯¹,
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长沙 410073
2.
中国兵器工业集团第二O六研究所西安 710100

基金项目: 国家自然科学基金(61971429)

详细信息

作者简介:
邢世其：男，博士，副研究员，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

黄大通：男，博士生，研究方向为合成孔径雷达信号处理与对抗

徐伟：男，博士生，研究方向为电子对抗系统设计技术与信号处理技术

李永祯：男，博士，博士生导师，研究方向为极化雷达信号处理、雷达电子对抗

肖顺平：男，博士，博士生导师，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

通讯作者:
黄大通　 huangdatong68@163.com

中图分类号: TN95
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- 被引次数: 0
出版历程
- 收稿日期: 2021-06-21
- 修回日期: 2021-09-06
- 网络出版日期: 2021-09-19
- 刊出日期: 2022-09-19

A Cooperative Jamming Method of Multiple Jammers Against Multi-channel Cancellation

1.
State Key Laboratory of Complex Electromagnetic Environment Effects on Electronics and Information System, National University of Defense Technology, Changsha 410073, China
2.
Xi’an Institute of Electronic Engineering, Xi’an 710100, China

Funds: The National Natural Science Foundation of China(61971429)

摘要

摘要: 针对3天线 (SAR-GMTI)的单干扰机输出结果会被周期性对消，造成场景中出现干扰盲区，导致运动目标被暴露的问题，该文提出一种多干扰机空-频协同的反对消方法。文中首先建立了以噪声乘积为基础，辅之以移频处理的多干扰机信号模型；接着，推导了干扰的SAR-GMTI输出解析式，从理论上分析了干扰对消的本质原因，继而得到了实现反对消的空-频协同条件；之后，详细论证了所提方法的性能情况。仿真结果表明，该文所提多干扰机协同对抗方法能有效反制SAR-GMTI的干扰对消作用，灵活高效地实现对场景中指定位置和范围的无盲区压制或欺骗效果，对工程实践具备一定的参考价值。
- 合成孔径雷达 /
- 动目标显示 /
- 乘积调制 /
- 多干扰机协同 /
- 反干扰对消
Abstract: Considering the problem that the output of three antennas Synthetic Aperture Radar-Ground Moving Target Indication (SAR-GMTI) under single jammer is periodically cancelled, causing the moving targets exposed due to the blind jamming areas. According to the noise multiplication, a countermeasure against the jamming cancellation is proposed, which is based on multi-jammer cooperation in space-frequency domain. First, the noise multiplication jamming is supplemented with frequency shift and the signal model of multi-jammer is established. Then, the analytical expression of SAR-GMTI jamming output is deduced and the essential reason why jamming is cancelled is analyzed, based on which the cooperation condition in space-frequency domain is obtained. Afterwards, the performance of the proposed countermeasure is analyzed in detail. Simulation results demonstrate that the proposed cooperation countermeasure can effectively offset the SAR-GMTI jamming cancellation, achieving suppression and deception jamming flexibly in the appointed location and scope without blind jamming area, which will provide some reference values for engineering applications.
- Synthetic Aperture Radar(SAR) /
- Ground Moving Target Indication(GMTI) /
- Multiplication modulation /
- Multi-jammer cooperation /
- Countermeasure against jamming cancellation

HTML全文

图 1 干扰场景

下载: 全尺寸图片幻灯片

图 2 多干扰机的协同调制流程

下载: 全尺寸图片幻灯片

图 3 无干扰成像结果

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图 4 单干扰机的干扰效果

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图 5 双干扰机空-频协同的干扰效果

下载: 全尺寸图片幻灯片

图 6 侦察误差下的协同压制效果

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图 7 侦察误差下的协同欺骗效果

下载: 全尺寸图片幻灯片

图 8 空域协同误差的影响

下载: 全尺寸图片幻灯片

表 1 干扰增益对比

	噪声模板参数		干扰机数量	SAR增益(dB)		GMTI增益(dB)
	快时间带宽(MHz)	慢时间带宽(Hz)	干扰机数量	理论值	实验值	理论值	实验值
单干扰机	9.4	189	1	10.5115	10.4721	–	–
	4.7	94	1	16.5321	16.4683	–	–
	2.4	47	1	22.5527	22.4212	–	–
多干扰机空-频协同	4.7	94	2	19.5424	19.4394	22.5527	22.4582
	4.7	94	4	22.5527	22.4316	25.5630	25.4510
	4.7	94	6	24.3136	24.2321	27.3239	27.2063

下载: 导出CSV

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