一种逆合成孔径雷达脉冲卷积干扰方法

Pulse Convolution Jamming Method Against Inverse Synthetic Aperture Radar

由于全天时、全天候、远距离、高分辨的特点,逆合成孔径雷达(ISAR)已被广泛应用于目标检测、运动监测、敌我识别、武器精确制导等领域。在ISAR成像技术及应用技术渐趋成熟的同时,开展与之相对的电子对抗手段的研究也成为不可回避的任务。提出了一种ISAR脉冲卷积干扰方法,干扰机截获到ISAR发射信号后,使用延时特征不同的脉冲序列与其进行卷积,随后转发至ISAR接收机。延时脉冲与ISAR发射信号卷积后实际效果等效于模拟了位于某特定距离单元内的散射点回波。因此,通过控制脉冲的延时参数,可达到产生虚假运动散射点的效果。该方法工程实现较为简单,计算量较小,具有一定应用前景。

Because of the character of all-day,all-weather,long-range and high resolution,Inverse Synthetic Aperture Radar(ISAR) has been widely used in target detection,motion monitoring,enemy identification,weapon precision guidance and other fields.While ISAR imaging technology and application technology are becoming more and more mature,it has become an inescapable task to carry out the research of relative electronic countermeasures.A pulse convolution jamming method against ISAR is proposed.After intercepting the ISAR transmitted signal,the jammer uses the pulse sequence with different delay characteristics to convolution with it,and transmits it to the ISAR receiver.The actual effect of delay pulse and ISAR transmitted signal convolution is equivalent to simulating the scattering point echo located in a specific distance unit.Therefore,by controlling the delay parameters of the pulse,the effect of producing false motion scattering points can be achieved.The engineering implementation of this method is simple and amount of calculation is small,so it has a certain application prospect.