单通道SAR抗欺骗干扰方法

刘宁; 赵博; 黄磊

doi:10.12000/JR18072

单通道SAR抗欺骗干扰方法

DOI: 10.12000/JR18072

刘宁¹,
赵博^2, ,,
黄磊²

①.
军事科学院北京 100091
②.
深圳大学信息工程学院广东省智能信息处理重点实验室深圳 518060

基金项目: 国家自然科学基金(61801297, U1713217, U1501253, 61501485, 61601300, 61601304)，中国博士后科学基金(2015M582413)，广东省自然科学基金(2015A030311030)，深圳市基础研究项目(ZDSYS201507081625213, JCYJ20160520165659418, JCYJ20170302142545828, JCYJ20150324140036835)

详细信息

作者简介:
刘宁：刘宁(1965–)，女，福建省福州人，硕士，高级工程师。1989年于电子科技大学获工程硕士学位。现在军事科学院工作，主要研究方向为信息处理与电子防御

赵博：赵博(1986–)，男，河南南阳人，博士，博士后。2015年在西安电子科技大学获得博士学位，现在深圳大学从事博士后研究工作。主要研究方向为雷达信号处理与电子对抗。E-mail: b_zhao@126.com

黄磊：黄磊(1975–)，男，广东湛江人，博士，特聘教授。现在深圳大学信息工程学院担任特聘教授，主要研究方向为阵列信号处理、雷达信号处理

通讯作者:
赵博 b_zhao@126.com

中图分类号: TN974
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出版历程
- 收稿日期: 2018-09-03
- 修回日期: 2018-10-19
- 网络出版日期: 2019-02-28

Anti-deceptive Jamming Methods Based on Single-channel Synthetic Aperture Radar

LIU Ning¹,
ZHAO Bo^{2
, ,},
HUANG Lei²

①.
Academy of Military Science, Beijing 100091, China
②.
Guangdong Key Laboratory of Intelligent Information Processing, College of Information Engineering, Shenzhen University, Shenzhen 518060, China

Funds: The National Natural Science Foundation of China (61801297, U1713217, U1501253, 61501485, 61601300, 61601304), The China Postdoctoral Science Foundation (2015M582413), The Natural Science Foundation of Guangdong Province, China (2015A030311030), The Foundation of Shenzhen City (ZDSYS201507081625213, JCYJ20160520165659418, JCYJ20170302142545828, JCYJ20150324140036835)

More Information

Corresponding author: ZHAO Bo, b_zhao@126.com

摘要

摘要: 该文讨论了单通道、固定波形SAR成像假设下的抗欺骗干扰方法，在有限的空域自由度与时域自由度下，利用欺骗干扰理论的本质缺陷，有效地提升了SAR系统在复杂电磁环境下的信息获取能力。建立了SAR成像与欺骗干扰的几何与信号模型，根据其各自的工作机理分析真实回波与欺骗干扰的特征差异。采用不同的成像处理流程提取两者各自的特征，并基于统计信息对差异特征进行增强，提高真实目标与虚假目标的分离度，从而实现欺骗干扰的辨识。并进一步采用动态合成孔径处理方法，构造真实目标与虚假目标的优化重构问题，通过对其求解实现两者的超分辨分离重构，达到欺骗干扰抑制的目的。仿真实验验证了该文方法的有效性。
- 单通道 /
- 合成孔径雷达 /
- 动态合成孔径 /
- 超分辨分离重构
Abstract: This paper discusses anti-deceptive jamming methods based on single-channel and fixed waveform assumptions for synthetic aperture radar imaging. Using the essential defects of the deceptive-jamming theory, the information acquisition ability of the Synthetic Aperture Radar (SAR) system in a complicated electromagnetic environment is effectively improved with limited degrees of freedom in spatial and time domains. Geometric and signal models of SAR imaging and deceptive jamming are established and the different characteristics between them are analyzed according to their working mechanisms. Upon extracting their characteristic differences via different imaging processes and enhancing them based on statistical information, the degree of separation between the true and false targets is increased. Therefore, identification on the deceptive jamming is realized. Moreover, an approach for the dynamic synthetic aperture is used to formulate an optimization problem for the reconstruction of true and false targets. By solving such a problem, the true and false targets are separately reconstructed with super-resolution, achieving the goal of deceptive-jamming suppression. The effectiveness of the proposed methods is verified by simulations.
- Single-channel /
- Synthetic Aperture Radar (SAR) /
- Dynamic synthetic aperture /
- Separate reconstruction with super-resolution

HTML全文

图 1 SAR成像与欺骗干扰几何模型

Figure 1. Geometric model of SAR imaging and deceptive jamming

下载: 全尺寸图片幻灯片

图 2 SAR真实回波与欺骗干扰时频分布

Figure 2. Time-frequency distribution of true SAR echoes and deceptive jamming

下载: 全尺寸图片幻灯片

图 3 SAR场景欺骗干扰辨识结果

Figure 3. Deceptive jamming identification result in a SAR scene

下载: 全尺寸图片幻灯片

图 4 Dechirp后的SAR真实回波与欺骗干扰时频分布

Figure 4. Time-frequency distribution of true SAR echoes and deceptive jamming after dechirping

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图 5 SAR场景设置与欺骗干扰结果

Figure 5. SAR scenario setup and deceptive jamming results

下载: 全尺寸图片幻灯片

图 6 基于动态合成孔径的目标1重构结果

Figure 6. Reconstruction results of target 1 based on dynamic synthetic aperture

下载: 全尺寸图片幻灯片

表 1 SAR参数设置

Table 1. SAR parameter setting

参数名称	参数值
带宽(MHz)	300
脉冲宽度(μs)	0.5
调频率(Hz/s)	6×10¹⁴
波长(m)	0.03
天线孔径长度(m)	1
波束宽度(rad)	0.03
最短斜距(km)	10
平台速度(m/s)	150
斜视角(°)	0
多普勒带宽(Hz)	300
合成孔径时间(s)	2

下载: 导出CSV

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