Near-Field DOA Estimation Algorithm Using Array Partition

被引：0
|
作者：
Chen G.-H. [1 ]
Zeng X.-P. [1 ]
Jiao S. [2 ]
机构：
[1] College of Microelectronics and Communication Engineering, Chongqing University, Chongqing
[2] Central South Electric Power Test Research Institute, China Datang Group Science and Technology Research Institute Co.，Ltd., Henan, Zhengzhou
来源：
Tien Tzu Hsueh Pao/Acta Electronica Sinica | 2022年 / 50卷 / 09期
关键词：
array partition; DOA estimation; fourth-order cumulant; near-field; range; spectral peak;
D O I：
10.12263/DZXB.20201364
中图分类号：
学科分类号：
摘要：
This paper proposes a near-field direction of arrival(DOA) estimation algorithm by using array partition. Firstly, the fourth-order cumulant and array partition are used to construct a Toeplitz matrix with only DOA information. Secondly, the spatial spectrum of multiple signal classification(MUSIC) algorithm at the spectrum peak is a breakpoint and approaches a larger value. Thus, to obtain high-resolution spectral peak, the first derivative of spatial spectrum is used to construct a new‘spatial spectrum’. Finally, the range of near-field source is estimated by the one-dimensional MUSIC algorithm. The simulation results show that the proposed algorithm improves the accuracy of DOA estimation at low signal to noise ratio. In addition, the proposed algorithm does not require two-dimensional spectral peak search, and it requires K+1 one-dimensional spectral peak search. © 2022 Chinese Institute of Electronics. All rights reserved.
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页码：2110 / 2118
页数：8
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