|
|||||
|
|
| 一种DOA估计的T差分平滑快速算法 | |
| 引用本文： | 张陆游,张永顺,徐加汉. 一种DOA估计的T差分平滑快速算法[J]. 现代雷达, 2010, 32(2) |
| 作者姓名： | 张陆游 张永顺 徐加汉 |
| 作者单位： | 1. 空军工程大学导弹学院,陕西,三原,713800;解放军94994部队,南京,210036 2. 空军工程大学导弹学院,陕西,三原,713800 3. 解放军94994部队,南京,210036 |
| 基金项目： | 国家自然科学基金项目 |
| 摘 要： | 针对未知非平稳噪声背景下相干信源的波达方向估计问题,提出了一种T差分平滑快速(TDSF)算法,算法根据非平稳噪声对角占优的特性,通过构造一个T矩阵,对协方差矩阵进行T变差分平滑运算,可同时分辨相干和非相干信源.算法采用幂迭代法直接获得噪声子空间,无需特征值分解,运算量较小,可有效地消除非平稳复噪声的影响,且不存在伪峰问题,适用于广泛的未知非平稳噪声和低信噪比环境.计算机仿真实验证实了算法的有效性. |
| 关 键 词： | DOA估计 非平稳噪声 相干信源 特征值分解 |
A T Difference Smoothing Fast Algorithm for DOA Estimation |
|
| ZHANG Lu-you,ZHANG Yong-shun,XU Jia-han. A T Difference Smoothing Fast Algorithm for DOA Estimation[J]. Modern Radar, 2010, 32(2) | |
| Authors: | ZHANG Lu-you ZHANG Yong-shun XU Jia-han |
| Affiliation: | ZHANG Lu-you1,2,ZHANG Yong-shun1,XU Jia-han2(1.Missile Institute of Air Force Engineering University,Sanyuan 713800,China)(2.Unit 94994 of PLA,Nanjing 210036,China) |
| Abstract: | For the need of coherent signal source DOA estimation in the presence of unknown non-stationary noise,a T difference smoothing fast(TDSF) Algorithm is proposed.According to the diagonal-dominated characteristic of non-stationary noise,a T matrix was constructed in this algorithm,which does the difference smoothing operation on the data covariance matrix.This algorithm can both resolve the correlated and uncorrelated signal sources.The algorithm adopts power iteration method to get the noise subspace,doesn't... |
| Keywords: | DOA non-stationary noise coherent signal source eigen-value decomposition |
| 本文献已被 CNKI 万方数据 等数据库收录！ | |
| 点击此处可从《现代雷达》浏览原始摘要信息 | |
| 点击此处可从《现代雷达》下载全文 | |