数目可调型ISAR图像欺骗干扰技术研究

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。

Deception jamming with alterable number of images for countering ISAR

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.