基于改进MUSIC算法的二维DOA估计方法

苏淑靖; 颜景龙; 马维贤

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基于改进MUSIC算法的二维DOA估计方法

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- 基于改进MUSIC算法的二维DOA估计方法
- 基于改进MUSIC算法的二维DOA估计方法
- Issue 1, (2007)
- 作者机构：
  
  北京理工大学宇航科学技术学院
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2007
- 稿件说明：
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苏淑靖, 颜景龙, 马维贤. 基于改进MUSIC算法的二维DOA估计方法[J]. 2007, (1).
DOI：

苏淑靖, 颜景龙, 马维贤. 基于改进MUSIC算法的二维DOA估计方法[J]. 2007, (1). DOI：

摘要

提出了一种改进的二维MUSIC算法

该算法通过重构阵列接收数据协方差矩阵来降低入射信号源间的相关性

抑制信号子空间向噪声子空间的扩散

从而解决用MUSIC算法估计相干信号源到达方向(DOA)时的漏估计问题.该方法不仅对相关信号源的DOA估计有好的特性

也可以提高非相关信号源的DOA估计特性

而且计算量也没有大的增加.仿真试验证明了改进算法的有效性.

Abstract

A method of being modified 2-D DOA estimation is presented.By reconstructing covariance matrix of the received array data

the correlativity of the incident signals is decreased

and mis-division between signal subspace and noise subspace is controlled

therefore the number of estimated signals would be equal to the number of actual incident signals.This method has good performance not only for DOA estimation of the correlation signals

but for DOA estimation of the non-correlation signals.In addition the computational complexity will not increase obviously.The simulation tests verify the validity of the presented algorithm.

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