空间非平稳噪声下的DOA快速估计新算法  

A Novel Rapid Method for Estimation DOA in Presence of Spatially Nonstationary Noise Fields

作　　者：曾耀平[1] 刘毓[1] 

机构地区：[1]西安邮电学院通信工程系,陕西西安710121

出　　处：《电声技术》2008年第8期68-71,共4页Audio Engineering

基　　金：陕西省自然科学基金项目(2006F16)

摘　　要：提出了空间非平稳噪声环境下DOA快速估计的新算法。通过利用估计的噪声相关矩阵对接受数据相关矩阵进行预处理,消除了空间非平稳噪声对方位估计的影响。利用线性运算来代替特征分解以求得噪声子空间,可以获得子空间算法的快速实现。计算机仿真结果证实了该算法的正确性和有效性。A rapid direction of arrival algorithm under spatially nonstationary noise fields is presented. Through an estimation of the colored noise covariance matrix, the received data for DOA estimation is prewhitened using the estimation noise covariance, and the influence of nonstationary noise is overcome. Using linearity operation instead of eigendecomposition, the computational complexity can be reduced. Finally, the computer simulation confirms the validity of the algorithms.

关 键 词：空间非平稳噪声 DOA估计 快速算法 

分 类 号：TN912[电子电信—通信与信息系统]