系统工程与电子技术 ›› 2021, Vol. 43 ›› Issue (6): 1524-1532.doi: 10.12305/j.issn.1001-506X.2021.06.09

• 雷达抗干扰技术 • 上一篇    下一篇

单站直达波欺骗干扰检测与抑制的DPCA方法

姜予名, 李景文*, 孙兵   

  1. 北京航空航天大学电子与信息工程学院, 北京 100191
  • 收稿日期:2020-12-31 出版日期:2021-05-21 发布日期:2021-05-28
  • 通讯作者: 李景文
  • 作者简介:姜予名(1993—), 男, 博士研究生, 主要研究方向为合成孔径雷达信号处理|李景文(1964—), 男, 教授, 博士, 主要研究方向为高分辨阵列测量系统与阵列信号处理, 微波遥感信息获取、处理及应用|孙兵(1981—), 男, 副教授, 博士, 主要研究方向为合成孔径雷达顶层设计与仿真、信号处理与质量评估、一体化仿真系统集成设计与实现
  • 基金资助:
    装备预先研究项目(30502010202)

DPCA method for detection and suppression of monostatic direct-wave deceptive jamming

Yuming JIANG, Jingwen LI*, Bing SUN   

  1. School of Electronics and Information Engineering, Beihang University, Beijing 100191, China
  • Received:2020-12-31 Online:2021-05-21 Published:2021-05-28
  • Contact: Jingwen LI

摘要:

针对合成孔径雷达(synthetic aperture radar, SAR)单干扰机直达波欺骗干扰的检测和抑制问题, 提出一种基于双通道分置相位中心天线(displace phase-center antenna, DPCA)方法的欺骗干扰检测方法。在DPCA条件下建立了图像域干扰信号模型,分析表明干扰信号在主辅图像中近似仅存在空变的相位偏置和位置偏移。基于该特征引入图像退化模型, 在DPCA检测基础上完成主图像内欺骗干扰的估计与抑制。点阵和面目标仿真结果验证了本文信号模型的正确性和欺骗干扰抑制算法的有效性。所提算法几乎不损失被欺骗干扰遮盖区域的场景信息, 能够有效抑制经由天线主瓣或副瓣进入的单站理想直达波欺骗干扰。

关键词: 合成孔径雷达, 直达波欺骗干扰, 分置相位中心天线, 图像退化模型

Abstract:

Aiming at the issue of detection and suppression of monostatic direct-wave deceptive jamming for synthetic aperture radar (SAR), a detection and suppression approach based on displace phase center antenna (DPCA) is proposed. A model of jamming signal in image domain is established under DPCA condition. The analysis shows that there is only space-variant phase offset and position offset in the master and slave images. Furthermore, image degradation model is also introduced to estimate and suppress deceptive jamming in master image based on DPCA detection. Simulations on point array and extended target verify both the model derived and the proposed deceptive jamming estimation and suppression algorithm. The proposed algorithm causes little information loss of scene covered by decoy target. It works for both main-lobe and side-lobe monostatic ideal direct-wave deceptive jamming.

Key words: synthetic aperture radar (SAR), direct-wave deceptive jamming, displace phase-center antenna (DPCA), image degradation model

中图分类号: