Symmetric thinned coprime array with reduced mutual coupling for mixed near‐field and far‐field sources localization

Abstract As we all know, the non‐uniform array is widely used in the mixed near‐field (NF) and far‐field sources localization. The nested array contains a uniform linear array, it is easy to be affected by mutual coupling, so we propose a symmetric thinned coprime array (STCA) to reduce the mutual c...

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Main Authors: Yinsheng Wang, WeiJia Cui, Bingqing Yang, Bin Ba, Fengtong Mei
Format: Article
Language:English
Published: Wiley 2022-08-01
Series:IET Radar, Sonar & Navigation
Subjects:
Online Access:https://doi.org/10.1049/rsn2.12261
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author Yinsheng Wang
WeiJia Cui
Bingqing Yang
Bin Ba
Fengtong Mei
author_facet Yinsheng Wang
WeiJia Cui
Bingqing Yang
Bin Ba
Fengtong Mei
author_sort Yinsheng Wang
collection DOAJ
description Abstract As we all know, the non‐uniform array is widely used in the mixed near‐field (NF) and far‐field sources localization. The nested array contains a uniform linear array, it is easy to be affected by mutual coupling, so we propose a symmetric thinned coprime array (STCA) to reduce the mutual coupling effect of mixed source localization. In this paper, the STCA configuration consists of two sparse uniform linear arrays, the first subarray is composed of 2N − 1 sensors, and the sensor element spacing is Md. The second subarray is composed of 2M+2⌊M2⌋ sensors, and the sensor element spacing are Nd and Md respectively. The two subarrays form the symmetric coprime array, which shares a reference sensor. Under the same number of physical array sensors, compared with the latest symmetric nested array, although STCA has lower consecutive lags, the array sensors have larger inter‐sensor spacing and larger physical array aperture, which can significantly reduce the mutual coupling effect between physical sensors, and better estimation performance of direction‐of‐arrival (DOA) estimation can be achieved. Finally, simulation results show that STCA can achieve better performance than other symmetric nested arrays under the same array sensors and mutual coupling effects.
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spelling doaj.art-3269b1bcd5af4c879d5f3c6e88567b2b2022-12-22T01:41:12ZengWileyIET Radar, Sonar & Navigation1751-87841751-87922022-08-011681292130310.1049/rsn2.12261Symmetric thinned coprime array with reduced mutual coupling for mixed near‐field and far‐field sources localizationYinsheng Wang0WeiJia Cui1Bingqing Yang2Bin Ba3Fengtong Mei4National Digital Switching System Engineering & Technological Research Center Zhengzhou Henan ChinaNational Digital Switching System Engineering & Technological Research Center Zhengzhou Henan ChinaXi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences Xi'an Shaanxi ChinaNational Digital Switching System Engineering & Technological Research Center Zhengzhou Henan ChinaNational Digital Switching System Engineering & Technological Research Center Zhengzhou Henan ChinaAbstract As we all know, the non‐uniform array is widely used in the mixed near‐field (NF) and far‐field sources localization. The nested array contains a uniform linear array, it is easy to be affected by mutual coupling, so we propose a symmetric thinned coprime array (STCA) to reduce the mutual coupling effect of mixed source localization. In this paper, the STCA configuration consists of two sparse uniform linear arrays, the first subarray is composed of 2N − 1 sensors, and the sensor element spacing is Md. The second subarray is composed of 2M+2⌊M2⌋ sensors, and the sensor element spacing are Nd and Md respectively. The two subarrays form the symmetric coprime array, which shares a reference sensor. Under the same number of physical array sensors, compared with the latest symmetric nested array, although STCA has lower consecutive lags, the array sensors have larger inter‐sensor spacing and larger physical array aperture, which can significantly reduce the mutual coupling effect between physical sensors, and better estimation performance of direction‐of‐arrival (DOA) estimation can be achieved. Finally, simulation results show that STCA can achieve better performance than other symmetric nested arrays under the same array sensors and mutual coupling effects.https://doi.org/10.1049/rsn2.12261far‐fieldmutual couplingnear‐fieldsource localizationSTCA
spellingShingle Yinsheng Wang
WeiJia Cui
Bingqing Yang
Bin Ba
Fengtong Mei
Symmetric thinned coprime array with reduced mutual coupling for mixed near‐field and far‐field sources localization
IET Radar, Sonar & Navigation
far‐field
mutual coupling
near‐field
source localization
STCA
title Symmetric thinned coprime array with reduced mutual coupling for mixed near‐field and far‐field sources localization
title_full Symmetric thinned coprime array with reduced mutual coupling for mixed near‐field and far‐field sources localization
title_fullStr Symmetric thinned coprime array with reduced mutual coupling for mixed near‐field and far‐field sources localization
title_full_unstemmed Symmetric thinned coprime array with reduced mutual coupling for mixed near‐field and far‐field sources localization
title_short Symmetric thinned coprime array with reduced mutual coupling for mixed near‐field and far‐field sources localization
title_sort symmetric thinned coprime array with reduced mutual coupling for mixed near field and far field sources localization
topic far‐field
mutual coupling
near‐field
source localization
STCA
url https://doi.org/10.1049/rsn2.12261
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AT bingqingyang symmetricthinnedcoprimearraywithreducedmutualcouplingformixednearfieldandfarfieldsourceslocalization
AT binba symmetricthinnedcoprimearraywithreducedmutualcouplingformixednearfieldandfarfieldsourceslocalization
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