摘要
雷达信号参数特征提取是电子情报侦察系统中的一个关键步骤,常采用直方图法。但直方图法中有一个关键且较难解决的问题:最优分组问题,且该问题对直方图法的有效性有着决定性的作用。根据信息熵的物理意义及其基本性质,提出一种基于熵最优分组判定准则的直方图算法,对雷达信号参数特征进行提取。并由仿真实验验证了该方法提取雷达信号参数特征的有效性。
The parameter feature extraction of radar signal is a key step in electronic inte tern and usually adopts histogram method, but there has a key and difficult problem that is llige the nce sysclassification problem and this problem has decisive effect on histogram. The histogram algorithm based on entropy optimal classification criterion is proposed according to the physical meaning of entropy and its basis eharacteristics. The simulation experiment shows the method is effeetive to extraet parameter feature of radar signal.
出处
《现代防御技术》
北大核心
2008年第1期97-100,共4页
Modern Defence Technology
关键词
直方图法
最优分组
熵
histogram algorithm
optimal classification
entropy
