基于信息熵的ISAR干扰效果评估方法  

ISAR jamming effectiveness evaluation method based on information entropy

作　　者：王振楠[1] 贾鑫[2] 吴彦鸿[2] 李云涛[1] 

机构地区：[1]装备指挥技术学院研究生院,北京101416 [2]装备指挥技术学院光电装备系,北京101416

出　　处：《国外电子测量技术》2008年第9期17-20,共4页Foreign Electronic Measurement Technology

摘　　要：将信息熵引入ISAR干扰效果评估,建立了以熵值为评估指标的评估模型,分析引起熵变的三个因素(分布样式、信噪比和带宽)与干扰效果之间的关系,最后在不同干扰条件下对点目标作仿真成像,并对其点散布函数进行对比分析,得到最终结论;证明了熵值这一指标具有一定的稳定性和通用性,在ISAR干扰的信号级评估下是可用的。Information entropy is introduced into ISAR jamming effectiveness evaluation, the evaluation model is founded which uses entropy as an evaluation index. Relations between the factors which cause entropy change （distributing style, SNR and bandwidth）and jamming effectiveness are analyzed. At last a point target is imaged under different jamming conditions and its point distributing functions （PDFs） are compared with each other, the final conclusion is gotten. Entropy is proved to be steady and universal, which can be used in ISAR jamming effectiveness evaluation on signal level.

关 键 词：ISAR 干扰效果评估 信息熵 

分 类 号：TN947[电子电信—信号与信息处理]