摘要
针对相干信号源的DOA估计问题,提出了一种基于最大特征矢量在线构造Toeplitz矩阵解相干的方法。通过接收到的数据,实时构造基于最大特征矢量的Toeplitz矩阵来估计相干源的DOA,它无需估计数据的协方差,计算量小,不损失阵列孔径。相比常规的解相干算法,在小快拍和低信噪比情况下,具有更好的估计性能,理论分析和仿真结果验证了该方法的有效性。
In this paper,a toeplitz matrix construction method on line using the eigenvector corresponding to the maximum eigenvalue is proposed for the DOA estimate of coherent signals.This method utilizes the received data to construct the toeplitz matrix based on the largest eigenvector in real time.It does not need to estimate the sample covariance matrix and don＇t loss the array aperture.Compared the conventional decorrelation methods,it has the better estimation performance,especially at the few snaps and the low SNR scenarios.Theoretical analyses and simulation results both show that the present method is effective.
出处
《火力与指挥控制》
CSCD
北大核心
2011年第10期111-114,共4页
Fire Control & Command Control
