ICA不动点原理及在单站无源雷达中的应用  

Principle of ICA Fixed Points and Its Application in Single Passive Radar

作　　者：张明亮[1] 王曙钊[1] 王卓[1] 牛德智[1] 

机构地区：[1]空军工程大学理学院,陕西西安710051

出　　处：《现代电子技术》2011年第11期1-4,共4页Modern Electronics Technique

基　　金：863创新基金(2007AAJ129)

摘　　要：为快速计算单站无源雷达定位中来波时间差,从研究信号波形入手,利用信号通过盲分离前后零值点不动的规律,将不动点作为信号的稀疏表示能减少计算量。采用了不动点匹配度概念,根据最大匹配度原则计算出该时间差。模拟实验显示,该方法在盲信号分离效果较差时依然有很高的效率和精度。不动点原理为无源雷达定位时计算来波到达时间差提供了新思路。In order to compute efficiently the temporal margin of two waves in the application of single passive radar,proceeding with the study of signal waveform,utilizes a law that a kind of signals′ zero-value dots are fixed after blind separation.This law can gain certain temporal connection between delayed signals quickly in the sparse way.The matching among fixed dots is defined,and then the temporal margin can be calculated according to maximum matching principle.The results of experiment demonstrate that the method still has high efficiency and accuracy although blind signal separation goes bad.This law offers a new way to calculate temporal margin between two waves in the application of single passive radar.

关 键 词：不动点原理 匹配度 ICA 单站无源雷达 

分 类 号：TN95-34[电子电信—信号与信息处理]