High‐accuracy DOA estimation via parallel sparse nested array with extended aperture and reduced mutual coupling
Abstract This letter proposes a novel parallel sparse nested array and then provides a matrix reconstruction‐based method with three steps, to enhance the performance of direction of arrival (DOA) estimation in practice. The spacings between the closest antennas along x‐ and y‐axes, are coprime and...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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Wiley
2023-09-01
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| Series: | Electronics Letters |
| Subjects: | |
| Online Access: | https://doi.org/10.1049/ell2.12930 |
| _version_ | 1797688674056404992 |
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| author | Yunlong Yang Guojun Jiang |
| author_facet | Yunlong Yang Guojun Jiang |
| author_sort | Yunlong Yang |
| collection | DOAJ |
| description | Abstract This letter proposes a novel parallel sparse nested array and then provides a matrix reconstruction‐based method with three steps, to enhance the performance of direction of arrival (DOA) estimation in practice. The spacings between the closest antennas along x‐ and y‐axes, are coprime and much greater than half‐wavelength in the proposed array, which contributes to efficiently eliminate the mutual coupling and achieve larger aperture with limited physical antennas. By using the oblique projection operator with iteration, the proposed method can employ all items of covariance matrix of the received data to construct a virtual covariance matrix with increased degrees of freedom, for effectively improving angle estimation performance. Then the unique and high‐accuracy DOA estimation is obtained via the coprime‐ness. The simulation results show the superiority of the proposed array and method for DOA estimation in the presence of mutual coupling and limited antennas. |
| first_indexed | 2024-03-12T01:35:01Z |
| format | Article |
| id | doaj.art-574f038767034f90b0bd42507696cda1 |
| institution | Directory Open Access Journal |
| issn | 0013-5194 1350-911X |
| language | English |
| last_indexed | 2024-03-12T01:35:01Z |
| publishDate | 2023-09-01 |
| publisher | Wiley |
| record_format | Article |
| series | Electronics Letters |
| spelling | doaj.art-574f038767034f90b0bd42507696cda12023-09-11T09:06:32ZengWileyElectronics Letters0013-51941350-911X2023-09-015917n/an/a10.1049/ell2.12930High‐accuracy DOA estimation via parallel sparse nested array with extended aperture and reduced mutual couplingYunlong Yang0Guojun Jiang1College of Information Science and Technology Donghua University Shanghai ChinaSchool of Information Science and Engineering East China University of Science and Technology Shanghai ChinaAbstract This letter proposes a novel parallel sparse nested array and then provides a matrix reconstruction‐based method with three steps, to enhance the performance of direction of arrival (DOA) estimation in practice. The spacings between the closest antennas along x‐ and y‐axes, are coprime and much greater than half‐wavelength in the proposed array, which contributes to efficiently eliminate the mutual coupling and achieve larger aperture with limited physical antennas. By using the oblique projection operator with iteration, the proposed method can employ all items of covariance matrix of the received data to construct a virtual covariance matrix with increased degrees of freedom, for effectively improving angle estimation performance. Then the unique and high‐accuracy DOA estimation is obtained via the coprime‐ness. The simulation results show the superiority of the proposed array and method for DOA estimation in the presence of mutual coupling and limited antennas.https://doi.org/10.1049/ell2.12930array signal processingradarsonar and navigationsignal processingwireless communications |
| spellingShingle | Yunlong Yang Guojun Jiang High‐accuracy DOA estimation via parallel sparse nested array with extended aperture and reduced mutual coupling Electronics Letters array signal processing radar sonar and navigation signal processing wireless communications |
| title | High‐accuracy DOA estimation via parallel sparse nested array with extended aperture and reduced mutual coupling |
| title_full | High‐accuracy DOA estimation via parallel sparse nested array with extended aperture and reduced mutual coupling |
| title_fullStr | High‐accuracy DOA estimation via parallel sparse nested array with extended aperture and reduced mutual coupling |
| title_full_unstemmed | High‐accuracy DOA estimation via parallel sparse nested array with extended aperture and reduced mutual coupling |
| title_short | High‐accuracy DOA estimation via parallel sparse nested array with extended aperture and reduced mutual coupling |
| title_sort | high accuracy doa estimation via parallel sparse nested array with extended aperture and reduced mutual coupling |
| topic | array signal processing radar sonar and navigation signal processing wireless communications |
| url | https://doi.org/10.1049/ell2.12930 |
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