摘要
针对宽频段窄带信号 ,利用时间平移构造伪数据矩阵 ,同时 ,将伪数据矩阵信号子空间进行旋转 ,并通过对构造的信号空间矩阵进行特征分解 ,提取导向矢量矩阵和旋转因子中所包含的角度和频率信息 ,从而直接获得频率和波达方向 ( DOA)的同时估计 .计算机仿真表明 ,该方法在中等信噪比下是有效的 。
The technique of simultaneous estimation of frequency and DOA is addressed. Based on signal subspace rotation and sampling of array signal and its delayed version, a new method is presented for the simultaneous estimation of frequency and DOA of multiple signal sources. By forming a so called signal space matrix, the estimated parameters of frequencies and DOAs are paired automatically. Simulation results show that the proposed method is effective.
出处
《北京理工大学学报》
EI
CAS
CSCD
北大核心
2001年第3期357-360,共4页
Transactions of Beijing Institute of Technology
基金
部级预研项目
