系统工程与电子技术

• 传感器与信号处理 • 上一篇    下一篇

数目可调型ISAR图像欺骗干扰技术研究

潘小义,王伟,冯德军,傅其祥,王国玉   

  1. 国防科技大学电子科学与工程学院, 湖南 长沙 410073
  • 出版日期:2014-05-22 发布日期:2010-01-03

Deception jamming with alterable number of images for countering ISAR

PAN Xiao-yi,WANG Wei,FENG De-jun,FU Qi-xiang,WANG Guo-yu   

  1. School of Electronic Science and Engineering, National University of Defense Technology, Changsha 410073, China
  • Online:2014-05-22 Published:2010-01-03

摘要:

将间歇采样转发处理和散射波干扰方法相结合,提出了一种针对逆合成孔径雷达(inverse synthetic aperture radar, ISAR)的虚假目标图像数目可调型欺骗干扰方法。推导并对比了雷达目标回波和散射波干扰信号在目标二维ISAR图像重构时的差异,分析了散射波干扰后虚假图像的旋转现象;结合解线频调处理,分析了间歇采样占空比、采样周期对干扰效果的影响,得到了虚假图像数目与成像场景大小、采样周期之间的约束关系,从而实现虚假目标图像数目可调。数字仿真和实测数据实验均证明了该方法的有效性。

Abstract:

Based on scatter-wave jamming and intermittent sampling repeater, a deception jamming method for countering inversee synthetic aperture radar (ISAR) is proposed. The 2D ISAR image reconstruction difference between the images formed by the jamming signals and by the radar signals is analyzed and there is a rotational angle in the false-target images. With the dechirping, the jamming effect caused by the intermittent ratio and the sampling interval is analyzed. The restriction between the number of the false-target images and the size of the imaging scene and the sampling interval is given so that the number of the falsetarget images can be controlled. The analyses are verified by processing of simulated and real data.