计算机工程 ›› 2009, Vol. 35 ›› Issue (3): 96-98,1.doi: 10.3969/j.issn.1000-3428.2009.03.034

• 网络与通信 • 上一篇    下一篇

低信噪比条件下的高分辨DOA估计算法

王 进,赵拥军,王志刚   

  1. (解放军信息工程大学信息工程学院,郑州 450002)
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2009-02-05 发布日期:2009-02-05

High Resolution DOA Estimation Algorithm with Low SNR

WANG Jin, ZHAO Yong-jun, WANG Zhi-gang   

  1. (Institute of Information Engineering, PLA Information Engineering University, Zhengzhou 450002)
  • Received:1900-01-01 Revised:1900-01-01 Online:2009-02-05 Published:2009-02-05

摘要: 提出一种基于多级维纳滤波器(MSWF)的信号波达方向(DOA)估计算法。通过测试信号子空间的估计值与噪声子空间的正交性实现DOA粗估计,通过测试MSWF分解的互相关函数实现信号DOA的精估计。仿真实验表明,在低信噪比条件下,该算法比已有的子空间类算法有更好的分辨率和误差性能。

关键词: 阵列信号处理, 波达方向, 多级维纳滤波, 正交测试

Abstract: A method of estimating Direction Of Arrival(DOA) based on Multistage Weiner Filtering(MSWF) is proposed. Rough estimation of DOA is provided by testing orthogonality between estimated signal subspace and noise subspace and gets more precise results through testing cross-correlation function of MSWF. Simulation shows that the proposed method offers improvements in estimation performance under low SNR condition compared with the previous algorithm.

Key words: array signal processing, Direction Of Arrival(DOA), Multistage Weiner Filtering(MSWF), test of orthogonality

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