LFM脉冲压缩雷达抗移频干扰的方法研究

A Countering Technique for LFM PC Radar Against Shift-frequency Jamming

研究了回波信号和移频干扰信号通过线性调频脉压雷达的脉压网络处理后的响应形式,找出移频干扰信号的特征参数,从而提出了一种利用数字接收机技术处理、计算出特征参数,并利用该特征参数对雷达获得的移频干扰所形成的假目标距离进行补偿而得到真实目标回波距离的抗移频干扰的思想,最后对该思想的实现、特点等问题进行了探讨。

The receiver output signal of both the target return signal and the false target return signal of shift-frequency jamming is deduced and the characteristic parameter of the false target return signal of shift-frequency jamming is picked out. In this paper, a method of countering shift-frequency jamming is proposed, which adopts the digital techniques for wideband receivers to process the received signals to estimate the characteristic parameter, and obtains the real range of target by compensating the range of shift-frequency jamming. Finally, some issues related to the implementation of the method of countering shift-frequency jamming are discussed.