基于信息维数的欺骗干扰存在性检测  

Detection of presence of deception jamming based on information dimension

作　　者：祝宏[1,2,3] 张海[1,3] 唐高弟[1] 李中云[1] 刘以农[2] 

机构地区：[1]中国工程物理研究院电子工程研究所,四川绵阳621999 [2]清华大学工程物理系,北京100084 [3]中国工程物理研究院中物院复杂电磁环境科学与技术重点实验室,四川绵阳621999

出　　处：《吉林大学学报（工学版）》2016年第2期616-620,共5页Journal of Jilin University:Engineering and Technology Edition

基　　金：中物院复杂电磁环境科学与技术重点实验室项目(2014E-05-1)

摘　　要：利用欺骗干扰信号与目标回波包络上的不同,基于分形理论中的信息维数提出了一种欺骗干扰的存在性检测方法。当信号本身的信息维数与信号包络的信息维数之差超过一定门限时,可判断存在欺骗干扰,同时可获知欺骗干扰的起始时刻。仿真结果表明:本文算法在干噪比不低于6dB时,检测概率在90%以上。A detection algorithm of the presence of deception jamming is proposed based on information dimension with the fact that the signal envelopes of deception jamming and target return are different.The algorithm can detect the existence or not of a deception jamming and find its initial time after calculating the difference between the signal＇s information dimension and the signal envelope＇s dimension.Simulation results show that this approach can detect deception jamming effectively when JNR is no less than 6dB,and the detection probability is higher than 90%.

关 键 词：雷达工程 抗干扰 欺骗干扰 分形维数 信息维数 

分 类 号：TN974[电子电信—信号与信息处理]