A super transformed nested array with reduced mutual coupling for direction of arrival estimation of non‐circular signals
Abstract Recently, sparse linear arrays have aroused significant attention because they can provide increased degrees of freedom (DOFs) and enlarged inter‐element spacing, which are the critical factors to improve the accuracy of direction of arrival (DOA) estimation. In this paper, to alleviate the...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Wiley
2022-05-01
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| Series: | IET Radar, Sonar & Navigation |
| Subjects: | |
| Online Access: | https://doi.org/10.1049/rsn2.12221 |
| _version_ | 1818494980733272064 |
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| author | Fengtong Mei Haiyun Xu WeiJia Cui Chunxiao Jian Jian Zhang |
| author_facet | Fengtong Mei Haiyun Xu WeiJia Cui Chunxiao Jian Jian Zhang |
| author_sort | Fengtong Mei |
| collection | DOAJ |
| description | Abstract Recently, sparse linear arrays have aroused significant attention because they can provide increased degrees of freedom (DOFs) and enlarged inter‐element spacing, which are the critical factors to improve the accuracy of direction of arrival (DOA) estimation. In this paper, to alleviate the high mutual coupling caused by the dense part of transformed nested arrays (TNAs), we present a super transformed nested array (STNA) for the DOA estimation of non‐circular signals. It can be obtained by removing some sensors from the dense part of transformed nested arrays and relocating them appropriately. The proposed array structure possesses a higher DOF and a sparser physical structure, resulting in less mutual coupling compared to TNA. For the proposed array structure, we provide theoretical proof of the DOFs and deduce the weight functions. Numerical simulations are conducted to demonstrate the advantages of the STNA over existing sparse arrays. |
| first_indexed | 2024-12-10T18:14:05Z |
| format | Article |
| id | doaj.art-36ec5ee83b184628bedef49be5ecc810 |
| institution | Directory Open Access Journal |
| issn | 1751-8784 1751-8792 |
| language | English |
| last_indexed | 2024-12-10T18:14:05Z |
| publishDate | 2022-05-01 |
| publisher | Wiley |
| record_format | Article |
| series | IET Radar, Sonar & Navigation |
| spelling | doaj.art-36ec5ee83b184628bedef49be5ecc8102022-12-22T01:38:22ZengWileyIET Radar, Sonar & Navigation1751-87841751-87922022-05-0116579981410.1049/rsn2.12221A super transformed nested array with reduced mutual coupling for direction of arrival estimation of non‐circular signalsFengtong Mei0Haiyun Xu1WeiJia Cui2Chunxiao Jian3Jian Zhang4National Digital Switching System Engineering & Technological Research Center Zhengzhou Henan ChinaNational Digital Switching System Engineering & Technological Research Center Zhengzhou Henan ChinaNational Digital Switching System Engineering & Technological Research Center Zhengzhou Henan ChinaNational Digital Switching System Engineering & Technological Research Center Zhengzhou Henan ChinaNational Digital Switching System Engineering & Technological Research Center Zhengzhou Henan ChinaAbstract Recently, sparse linear arrays have aroused significant attention because they can provide increased degrees of freedom (DOFs) and enlarged inter‐element spacing, which are the critical factors to improve the accuracy of direction of arrival (DOA) estimation. In this paper, to alleviate the high mutual coupling caused by the dense part of transformed nested arrays (TNAs), we present a super transformed nested array (STNA) for the DOA estimation of non‐circular signals. It can be obtained by removing some sensors from the dense part of transformed nested arrays and relocating them appropriately. The proposed array structure possesses a higher DOF and a sparser physical structure, resulting in less mutual coupling compared to TNA. For the proposed array structure, we provide theoretical proof of the DOFs and deduce the weight functions. Numerical simulations are conducted to demonstrate the advantages of the STNA over existing sparse arrays.https://doi.org/10.1049/rsn2.12221degree of freedomdirection of arrival (DOA)mutual couplingnested arraysnon‐circular signal |
| spellingShingle | Fengtong Mei Haiyun Xu WeiJia Cui Chunxiao Jian Jian Zhang A super transformed nested array with reduced mutual coupling for direction of arrival estimation of non‐circular signals IET Radar, Sonar & Navigation degree of freedom direction of arrival (DOA) mutual coupling nested arrays non‐circular signal |
| title | A super transformed nested array with reduced mutual coupling for direction of arrival estimation of non‐circular signals |
| title_full | A super transformed nested array with reduced mutual coupling for direction of arrival estimation of non‐circular signals |
| title_fullStr | A super transformed nested array with reduced mutual coupling for direction of arrival estimation of non‐circular signals |
| title_full_unstemmed | A super transformed nested array with reduced mutual coupling for direction of arrival estimation of non‐circular signals |
| title_short | A super transformed nested array with reduced mutual coupling for direction of arrival estimation of non‐circular signals |
| title_sort | super transformed nested array with reduced mutual coupling for direction of arrival estimation of non circular signals |
| topic | degree of freedom direction of arrival (DOA) mutual coupling nested arrays non‐circular signal |
| url | https://doi.org/10.1049/rsn2.12221 |
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