Conjugate Augmented Decoupled 3-D Parameters Estimation Method for Near-Field Sources

被引：20

作者：

Chen, Hua ^{[1
]}

Jiang, Zhiwei ^{[1
]}

Liu, Wei ^{[2
]}

Tian, Ye ^{[1
]}

Wang, Gang ^{[1
]}

机构：

[1] Ningbo Univ, Fac Elect Engn & Comp Sci, Ningbo 315211, Peoples R China

[2] Univ Sheffield, Dept Elect & Elect Engn, Sheffield S1 3JD, S Yorkshire, England

来源：

IEEE TRANSACTIONS ON AEROSPACE AND ELECTRONIC SYSTEMS | 2022年 / 58卷 / 05期

基金：

英国工程与自然科学研究理事会; 中国国家自然科学基金;

关键词：

Direction-of-arrival estimation; Location awareness; Multiple signal classification; Sensor arrays; Azimuth; Delays; Two dimensional displays; Automatically paired; cross array; multiple dimensionality decoupled; near-field (NF); spatial-temporal; CRAMER-RAO BOUNDS; SOURCE LOCALIZATION; DOA ESTIMATION; FAR-FIELD; SPARSE;

D O I：

10.1109/TAES.2022.3164864

中图分类号：

V [航空、航天];

学科分类号：

08 ; 0825 ;

摘要：

A near-field source localization method is proposed for 2-D direction-of-arrival (DOA) and range estimation based on a symmetrical cross array. It first employs the conjugate symmetry property of signal autocorrelation for different time delays to construct a conjugate augmented spatial-temporal cross-correlation matrix, then the extended steering vector is decoupled to avoid the usual multidimensional search based on the properties of the Khatri-Rao product, and finally three 1-D MUSIC-type searches are employed to obtain the results. The proposed method can realize automatic pairing of multiple parameters associated with each source and it also works in the underdetermined case. Furthermore, the stochastic Cramer-Rao lower bound with different time delays is derived. Compared with two existing methods, simulation results demonstrate that the proposed method provides satisfactory estimation performance for both the DOA and range parameters at low signal-to-noise ratio and with a small number of snapshots.

引用

页码：4681 / 4689

页数：9

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