一种估计宽带信号源数目的新方法  

A New Method for Estimating the Number of Wideband Sources

作　　者：张恒利[1] 赵拥军[1] 张培峰[1] 

机构地区：[1]信息工程大学信息工程学院,郑州450002

出　　处：《电子信息对抗技术》2008年第3期4-6,17,共4页Electronic Information Warfare Technology

摘　　要：信号源数目估计是波达方向(DOA)估计的基础。基于噪声特征值的统计特性,文章在宽带信号条件下,基于各个频率点下的阵列采样协方差矩阵的噪声特征值在平面直角坐标系中几乎处于同一条直线上这一统计特性,提出了一种新的估计宽带信号源数目的方法,该方法简单且易于实现。最后通过计算机仿真验证了此方法的有效性和优越性。In many applications of array signal processing, the number of signal sources has to be determined firstly. Based on statistical property of the noise eigenvalues of each frequency which is approximately fitted by a straight line, a novel method of estimating the number of wideband sources has been proposed. The computer simulations show the availability and efficacy of the method.

关 键 词：宽带信号 数目估计 

分 类 号：TN971.1[电子电信—信号与信息处理]