线性调频脉冲的移频干扰性能研究

借鉴模糊函数，对线性调频脉冲在匹配滤波下的移频干扰进行分析，重点对其性能参数(失配峰值损耗、干峰时刻、干噪比、干信脉宽比)进行推导。通过分析可知，当频偏比较小时，移频干扰产生与原信号相仿的波形输出，以欺骗干扰为主；当频偏比较大时，移频干扰产生的波形严重失真，以压制干扰为主。最后，运用雷达方程对这两类情况进行进一步分析。

Performance of shift-frequency jamming against LFM signal pulse

Using ambiguity function, the performance of shift-frequency jamming against linear frequency modulation pulse is analysed. Some interference parameters according to radar signal detection are studied in detail, which are defined as jamming peak value loss, jamming peak time, jamming noise ratio, jamming signal width ratio. By shift frequency ratio, the suppression jamming and deceive jamming are separated. Low value shift frequency ratio means deceive jamming cause the output waveform by shift-frequency jamming as same as it by target echo, while high value means suppression jamming cause the output waveform distortion. The radar equation is used to analyse the two models.