计算机工程与应用 ›› 2011, Vol. 47 ›› Issue (6): 135-137.

• 数据库、信号与信息处理 • 上一篇    下一篇

一种高性能的二维波达方向估计算法

郑 植1,2,李广军2,滕云龙1   

  1. 1.电子科技大学 电子科学技术研究院,成都 610054
    2.电子科技大学 通信与信息工程学院,成都 610054
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2011-02-21 发布日期:2011-02-21

High performance 2-D DOA estimation algorithm

ZHENG Zhi1,2,LI Guangjun2,TENG Yunlong1   

  1. 1.Research Institute of UESTC,Chengdu 610054,China
    2.School of Communication and Information Engineering,UESTC,Chengdu 610054,China
  • Received:1900-01-01 Revised:1900-01-01 Online:2011-02-21 Published:2011-02-21

摘要: 在二维虚拟ESPRIT算法的基础上,提出了一种高性能的改进算法。改进方法依照子阵数据直接空间平滑的思想对子阵数据进行预处理,用虚拟阵列变换技术实施阵列变换,采用波达方向矩阵法的思路计算二维角度参数。仿真结果表明,相比于空域平滑的DOA矩阵法和空域平滑的二维虚拟ESPRIT算法,该方法在低信噪比情况下对相干信号源具有更好的估计性能,对独立信号源,能够估计出超过子阵阵元数的信号。

关键词: 二维虚拟ESPRIT算法, 空间平滑, 虚拟阵列变换, 波达方向矩阵法

Abstract: Based on 2-D virtual ESPRIT algorithm,a high performance improved method is presented.The new method smooths the subarray data by subarray data direct spatial smoothing.And then virtual array transformation technology is used to realize array transformation.The 2-D angle parameters are computed by DOA matrix method.Simulation results indicate that compared with spatial smoothing 2-D virtual ESPRIT algorithm and spatial smoothing DOA matrix method,the method has better estimation performance for coherent signal sources in low SNR environments,and it can estimate more independent signal sources than the number of the subarray actual sensors.

Key words: 2-D virtual ESPRIT algorithm, spatial smoothing, virtual array transformation, DOA matrix method