DOA Estimation of Uncorrelated and Coherent Mixed Signals in Colored Noise

被引：0
|
作者：
Rao W. [1 ,2 ]
Jia F.-Q. [1 ]
Li D. [2 ]
机构：
[1] School of Information Engineering, Nanchang Institute of Technology, Jiangxi, Nanchang
[2] School of Information Science and Technology, Fudan University, Shanghai
来源：
Tien Tzu Hsueh Pao/Acta Electronica Sinica | 2023年 / 51卷 / 03期
基金：
中国国家自然科学基金;
关键词：
coherent signals; colored noise; direction of arrival estimation; spatial difference algorithm;
D O I：
10.12263/DZXB.20211216
中图分类号：
学科分类号：
摘要：
A new direction-of-arrival (DOA) estimation method is proposed for uncorrelated and coherent mixed signals in the background of colored noise. Firstly, the covariance matrix of the mixed signals is analyzed and processed to eliminate the colored noise. On this basis, the DOA of uncorrelated signals is first estimated by the multiple signal classification (MUSIC) method or the estimation of signal parameters via rotational invariance techniques (ESPRIT) method. Then a new covariance matrix containing only coherent signals without rank deficit is constructed by using the improved spatial difference method. Finally, the DOA of coherent signals is estimated by MUSIC or ESPRIT. The proposed method outperform related methods in estimating DOA of mixed signals, especially coherent signals. Simulation results show the effectiveness of the proposed algorithm. © 2023 Chinese Institute of Electronics. All rights reserved.
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收藏
页码：622 / 631
页数：9
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