LFM脉冲雷达恒虚警检测的多假目标干扰研究

Multi-false-target jamming effects on the LFMpulsed radar's CFAR detection

针对采用均值恒虚警检测器的线性调频脉冲雷达,提出了一种破坏雷达检测的多假目标干扰方法。首先,阐述了利用多普勒频率调制实现假目标分布的干扰策略。推导了假目标信噪比、假目标个数等关键参数。最后对干扰系统提出了一些建议,并对推导的结论进行了仿真验证。仿真结果表明,采用这种干扰方法可以大大降低目标被发现的概率。

A multi-false-target jamming method against to the LFM pulsed radar with mean level (ML) CFAR detector is proposed. Firstly, this jamming method is illuminated which takes advantage of the Doppler modulation to realize the false targets' distribution. Then some key parameters are derived, for instance, the false targets' SNR and the number of false targets. Lastly, some important advices are presented for the jammer system, and simulations are made to validate the conclusion derived. The simulation results show that the radar's target detection probability is decreased greatly by employing this jamming method.