基于数字图像合成器的ISAR微动干扰方法

根据目标微动产生的微多普勒谱会影响ISAR成像的特点,提出了基于数字图像合成器的ISAR微动干扰方法。该方法将传统的固定假目标模板修改为具有一定微动特性的假目标模板,并将该模板对截获的雷达信号进行调制,得到了包含微动信息的干扰信号。研究结果表明该干扰信号不仅可以对ISAR形成微动特征欺骗干扰,还可以对ISAR图像造成一定程度的污染,甚至形成散焦压制干扰。最后,计算机仿真实验验证了该方法的有效性。

A Micro-Motion Jamming Method to ISAR Based on Digital Image Synthesiser

According to the characteristic of which micro-Doppler induced by micro-motion target may affect ISAR imaging,a micro-motion jamming method to ISAR based on digital image synthesizer is presented in this paper.In this method,the traditional template of false-target is modified by the template of micro-motion false-target,and the jamming signals that contain the micro-motion information are obtained by using the modified template to modulate the intercepted radar signals.The research results show that this method not only can realize the micro-motion feature deception jamming to ISAR,but also can contaminate the ISAR image in some degree,even realizes the unfocused image barrage jamming to ISAR.Finally,the validity of the jamming method is justified by simulation experiment.