| 一种新颖的DOA估计算法 |
| |
| 引用本文： | 周祎, 冯大政, 刘建强. 一种新颖的DOA估计算法[J]. 电子与信息学报, 2005, 27(10): 1513-1516. |
| |
| 作者姓名： | 周祎 冯大政 刘建强 |
| |
| 作者单位： | 西安电子科技大学雷达信号处理国家重点实验室,西安,710071;西安电子科技大学雷达信号处理国家重点实验室,西安,710071;西安电子科技大学雷达信号处理国家重点实验室,西安,710071 |
| |
| 摘 要： | 子空间类波达方向(Direction Of Arrival, DOA)估计算法的关键在于得到高质量的信号子空间估计。该文利用矩阵伪逆的双正交性，针对源信号不相关而其本身是色信号的情况，给出了一种新颖的DOA估计算法，它不需要知道噪声统计特性。该算法利用一组空时相关矩阵的结构化信息，能稳健而精确地估计出信号子空间，从而得到DOA的精确估计。仿真实验证实了所给算法的有效性。
|
| 关 键 词： | 阵列信号处理 色噪声 信号子空间 DOA估计 空时相关矩阵 |
| 文章编号： | 1009-5896(2005)10-1513-04 |
| 收稿时间： | 2004-04-05 |
| 修稿时间： | 2004-08-20 |
A Novel Approach to DOA Estimation |
| |
| Zhou Yi, Feng Da-zheng, Liu Jian-qiang. A Novel Approach to DOA Estimation[J]. Journal of Electronics & Information Technology, 2005, 27(10): 1513-1516. |
| |
| Authors: | Zhou Yi Feng Da-zheng Liu Jian-qiang |
| |
| Affiliation: | National Key Laboratory for Radar Signal Processing, Xidian Univ., Xi'an 710071, China |
| |
| Abstract: | The key issue of the subspace-based Direction Of Arrival (DOA) estimation lies in the estimation of signal subspace with high quality. In the case of uncorrelated signals while the signals are temporally correlated ones, a novel approach for estimation of DOA in unknown correlated noise fields is proposed. Based on the biorthogonality between a matrix and its Moore-Penrose pseudo-inverse, the proposed method makes no assumptions on the spatial covariance matrix of the noise. The approach exploits the structural information of a set of spatio-temporal correlation matrices, and gives a robust and precise estimation of signal subspace to obtain a precise estimation of DOA. The performances are confirmed by computer simulation results. |
| |
| Keywords: | Array signal processing Color noise Signal subspace DOA estimation Spatio-temporal correlation matrices |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《电子与信息学报》浏览原始摘要信息 |
|
点击此处可从《电子与信息学报》下载全文 |
