LFMCW雷达距离-速度同步干扰技术

Range and Velocity Synchronous Jamming for LFMCW Radar

基于LFMCW雷达的工作方式,研究了去斜混频以及动目标检测处理下有效干扰方法。对于距离-速度两维信息同时检测的侦察雷达,单独的一维距离欺骗干扰很容易被雷达识别,因此,提出一种调频斜率失配与速度灵巧欺骗同步干扰的方法,并与常规的距离-速度同步干扰方法进行了仿真比较。改进方法在降低假目标个数和合理分配干扰资源的优势下,可以扩大两维干扰范围,并可以有效地压制或欺骗真实目标。

Based on how the LFMCW ground reconnaissance radar works,some effective jamming methods are studied to deal with the dechirp mixing and moving target detection technique.One dimensional jamming is easy to be recognized by reconnaissance radar which detects range and velocity at the same time. Therefore,a synchronous deception method combined with jamming frequency modulation slope mismatch and smart velocity deception is proposed. Compared with the conventional distance and velocity synchronous jamming method,the new method is justified with computer simulation results,which can effectively suppress and decept the real target and expand the jamming range under the advantage of efficient jamming resources assignment and less imitated targets.