一种CFAR检测雷达的可控干扰新方法

A New Controllable Jamming Method for CFAR Detection Radar

针对目前常见恒虚警(CFAR)检测雷达干扰方法所产生干扰效果单一的问题,提出一种基于多相位分段调制的干扰方法。对该方法的基本原理进行说明,推导干扰信号的脉压输出结果,基于单元平均恒虚警检测方法,分析了该方法对CFAR检测雷达的干扰效果。最后进行仿真与分析,说明该干扰不仅可以形成压制干扰,还能够形成假目标欺骗干扰,并且通过对分路数、调制相位数以及调制相位值三个参数的变化,可以实现对假目标数与假目标幅值的控制,是一种灵活可控的干扰方法。

Aiming at the problem that the current common jamming methods can only achieve single jamming effect on the constant false alarm rate(CFAR)detection radar,a new method based on multiple phase sectionalized modulation is proposed.Its basic principle is illustrated,and the pulse compression result of jamming signal is derived.The jamming effect of the proposed method on the CFAR detection radar is analyzed based on cell averaging constant false alarm rate(CA-CFAR)detection method.Finally,through simulation and analysis,it is obvious that this method is flexible and controllable.It can realize not only blanket jamming,but also false target deception jamming.Through the change of signal number,modulation phase number,and phase modulation value,the false target number and amplitude value can be controlled.