论述了转发式距离假目标干扰与灵巧噪声干扰的信号模型及作用机理,结合干扰原理,采用差拍处理算法抑制干扰,该算法以雷达前面某一脉冲重复周期的接收信号(未受到干扰的雷达接收信号)为参考,求得其与当前脉冲重复周期雷达接收信号(受到干扰)的差拍信号。通过差拍处理,使目标回波信号的差拍频率分量移至低频,干扰信号的差拍频率分量移至高频,然后通过设计低通滤波器滤除干扰信号的差拍频率分量,再通过逆差拍运算处理恢复出目标回波信号。

The signal model and operation principle of Transmitted range false target jamming and Smart noise jamming is discussed, put forward an algorithm of diff-pat dealing to suppress jamming, this algorithm take the previous pulse repeat interval as reference signal(not be jammed), carry out a diff-pat dealing with the current pulse repeat interval(be jammed). Via diff-pat dealing, the target echo can be moved to the low frequency band, and the jamming signal will be moved to a higher frequency band in frequency domain, thus, a low pass filter can be utilized to cancel the jamming signal and then the target echo can be rebuilt through Inverse diff-pat dealing.