Hole‐free sparse array for highly efficient direction of arrival estimation: Enhanced uniform difference co‐array
Abstract Sparse arrays with O(N) sensors can offer ON2 number of degrees of freedom by exploiting the difference co‐array that can be obtained from the second‐order statistics of received signals. In this article, a novel sparse array with seven subarrays (SA‐7S) by carefully assembling the subarray...
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2023-11-01
|
| Series: | IET Radar, Sonar & Navigation |
| Subjects: | |
| Online Access: | https://doi.org/10.1049/rsn2.12453 |
| _version_ | 1797630918234472448 |
|---|---|
| author | Baohua Zhang Guangyi Liu Ou Li Zhixiang Shen Fengtong Mei |
| author_facet | Baohua Zhang Guangyi Liu Ou Li Zhixiang Shen Fengtong Mei |
| author_sort | Baohua Zhang |
| collection | DOAJ |
| description | Abstract Sparse arrays with O(N) sensors can offer ON2 number of degrees of freedom by exploiting the difference co‐array that can be obtained from the second‐order statistics of received signals. In this article, a novel sparse array with seven subarrays (SA‐7S) by carefully assembling the subarrays is proposed, and the resulting SA‐7S can generate a hole‐free uniform difference co‐array. The sensor locations of the SA‐7S array are uniquely determined by a closed‐form expression and the number of achievable degrees of freedom is analytically presented as well. Theoretical analysis shows that the SA‐7S can provide a higher number of degrees of freedom than most sparse linear arrays. Simulations are performed to validate the advantage of the proposed array in terms of uDOFs, mutual coupling and direction of arrival estimation performance. |
| first_indexed | 2024-03-11T11:13:41Z |
| format | Article |
| id | doaj.art-9a087dc99af84b798223d3e420a4e02d |
| institution | Directory Open Access Journal |
| issn | 1751-8784 1751-8792 |
| language | English |
| last_indexed | 2024-03-11T11:13:41Z |
| publishDate | 2023-11-01 |
| publisher | Wiley |
| record_format | Article |
| series | IET Radar, Sonar & Navigation |
| spelling | doaj.art-9a087dc99af84b798223d3e420a4e02d2023-11-11T07:40:20ZengWileyIET Radar, Sonar & Navigation1751-87841751-87922023-11-0117111612162510.1049/rsn2.12453Hole‐free sparse array for highly efficient direction of arrival estimation: Enhanced uniform difference co‐arrayBaohua Zhang0Guangyi Liu1Ou Li2Zhixiang Shen3Fengtong Mei4PLA Strategy Support Force Information Engineering University Zhengzhou Henan ChinaPLA Strategy Support Force Information Engineering University Zhengzhou Henan ChinaPLA Strategy Support Force Information Engineering University Zhengzhou Henan ChinaPLA Strategy Support Force Information Engineering University Zhengzhou Henan ChinaPLA Strategy Support Force Information Engineering University Zhengzhou Henan ChinaAbstract Sparse arrays with O(N) sensors can offer ON2 number of degrees of freedom by exploiting the difference co‐array that can be obtained from the second‐order statistics of received signals. In this article, a novel sparse array with seven subarrays (SA‐7S) by carefully assembling the subarrays is proposed, and the resulting SA‐7S can generate a hole‐free uniform difference co‐array. The sensor locations of the SA‐7S array are uniquely determined by a closed‐form expression and the number of achievable degrees of freedom is analytically presented as well. Theoretical analysis shows that the SA‐7S can provide a higher number of degrees of freedom than most sparse linear arrays. Simulations are performed to validate the advantage of the proposed array in terms of uDOFs, mutual coupling and direction of arrival estimation performance.https://doi.org/10.1049/rsn2.12453array signal processingsensor arrayssignal processing |
| spellingShingle | Baohua Zhang Guangyi Liu Ou Li Zhixiang Shen Fengtong Mei Hole‐free sparse array for highly efficient direction of arrival estimation: Enhanced uniform difference co‐array IET Radar, Sonar & Navigation array signal processing sensor arrays signal processing |
| title | Hole‐free sparse array for highly efficient direction of arrival estimation: Enhanced uniform difference co‐array |
| title_full | Hole‐free sparse array for highly efficient direction of arrival estimation: Enhanced uniform difference co‐array |
| title_fullStr | Hole‐free sparse array for highly efficient direction of arrival estimation: Enhanced uniform difference co‐array |
| title_full_unstemmed | Hole‐free sparse array for highly efficient direction of arrival estimation: Enhanced uniform difference co‐array |
| title_short | Hole‐free sparse array for highly efficient direction of arrival estimation: Enhanced uniform difference co‐array |
| title_sort | hole free sparse array for highly efficient direction of arrival estimation enhanced uniform difference co array |
| topic | array signal processing sensor arrays signal processing |
| url | https://doi.org/10.1049/rsn2.12453 |
| work_keys_str_mv | AT baohuazhang holefreesparsearrayforhighlyefficientdirectionofarrivalestimationenhanceduniformdifferencecoarray AT guangyiliu holefreesparsearrayforhighlyefficientdirectionofarrivalestimationenhanceduniformdifferencecoarray AT ouli holefreesparsearrayforhighlyefficientdirectionofarrivalestimationenhanceduniformdifferencecoarray AT zhixiangshen holefreesparsearrayforhighlyefficientdirectionofarrivalestimationenhanceduniformdifferencecoarray AT fengtongmei holefreesparsearrayforhighlyefficientdirectionofarrivalestimationenhanceduniformdifferencecoarray |