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...
Main Authors: | , , , , |
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Format: | Article |
Language: | English |
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Wiley
2022-08-01
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Series: | IET Radar, Sonar & Navigation |
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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. |
first_indexed | 2024-12-10T16:41:50Z |
format | Article |
id | doaj.art-3269b1bcd5af4c879d5f3c6e88567b2b |
institution | Directory Open Access Journal |
issn | 1751-8784 1751-8792 |
language | English |
last_indexed | 2024-12-10T16:41:50Z |
publishDate | 2022-08-01 |
publisher | Wiley |
record_format | Article |
series | IET Radar, Sonar & Navigation |
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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