机械与电子2025，Vol.43Issue(9)：10-16,7.
基于Toeplitz矩阵重构的相干信源DOA估计算法
Coherent Source DOA Estimation Algorithm Based on Toeplitz Matrix Reconstruction
摘要
Abstract
An improved DOA estimation algorithm based on Toeplitz matrix reconstruction is proposed to solve the problem that the traditional DOA estimation algorithm can not identify the coherent signal ac-curately when it is processed.Firstly,through the feature decomposition of covariance matrix and the ar-rangement of eigenvalues from small to large,the eigenvector corresponding to its maximum value is ob-tained and the row vector of the first row in the covariance matrix is extracted.Then,two Toeplitz matrices are constructed based on the two vector information respectively.By using the idea of forward and back-ward smoothing,the sum is averaged to get the final reconstruction matrix.Finally,DOA estimation of the matrix is carried out according to the principle of MUSIC algorithm.The experimental results show that the proposed algorithm can accurately estimate the location of multiple coherent sources,and verify that the algorithm still shows good stability under the conditions of low SNR and limited fast beat.This re-search not only deepens the theory of target location,but also provides a new idea for DOA estimation in array signal processing,which has important theoretical value.关键词
相干信号/噪声子空间/MUSIC算法/Toeplitz矩阵Key words
coherent signal/noise subspace/MUSIC algorithm/Toeplitz matrix分类
信息技术与安全科学引用本文复制引用
郭锦荣,荣景岳,赵欣洒,张权,张鹏程,韩建宁..基于Toeplitz矩阵重构的相干信源DOA估计算法[J].机械与电子,2025,43(9):10-16,7.基金项目
山西省回国留学人员科研资助项目(2023-127) （2023-127）
山西省自然科学基金面上项目(202103021224201) （202103021224201）
