线性调频脉冲的移频干扰性能研究  

Performance of shift-frequency jamming against LFM signal pulse

作　　者：黄翀鹏[1] 王剑[2] 徐保国[1] 

机构地区：[1]江南大学物联网工程学院,江苏无锡214122 [2]清华大学电子系,北京100084

出　　处：《系统工程与电子技术》2013年第5期935-939,共5页Systems Engineering and Electronics

基　　金：国防科工委基础科研项目(A1420080177)资助课题

摘　　要：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。Using ambiguity function, the performance of shift-frequency jamming against linear frequencymodulation pulse is analysed. Some interference parameters according to radar signal detection are studied in de- tail, 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.

关 键 词：线性调频 模糊函数 移频干扰 雷达方程 干扰性能参数 

分 类 号：TN958[电子电信—信号与信息处理]