The Analysis of Using Spatial Smoothing for DOA Estimation of Coherent Signals in Sparse Arrays
When there is coexistence of uncorrelated and coherent signals in sparse arrays, the conventional algorithms for direction-of-arrival (DOA) estimation using difference coarray fail. In order to solve the problems, this paper analyzes the feasibility of using spatial smoothing in sparse arrays. First...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2021-01-01
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| Series: | International Journal of Antennas and Propagation |
| Online Access: | http://dx.doi.org/10.1155/2021/4447562 |
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| _version_ | 1832546027406622720 |
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| author | Haiyun Xu Weijia Cui Yuxi Du Fengtong Mei Bin Ba |
| author_facet | Haiyun Xu Weijia Cui Yuxi Du Fengtong Mei Bin Ba |
| author_sort | Haiyun Xu |
| collection | DOAJ |
| description | When there is coexistence of uncorrelated and coherent signals in sparse arrays, the conventional algorithms for direction-of-arrival (DOA) estimation using difference coarray fail. In order to solve the problems, this paper analyzes the feasibility of using spatial smoothing in sparse arrays. Firstly, we summarize the two types of sparse arrays, one consisting of identical sparse subarrays and the other consisting of several uniform linear subarrays. Then, we give the feasibility analysis and the processes of applying spatial smoothing. At last, we discuss the performance of the number of detectable coherent signals in different sparse arrays. Numerical experiments prove the conclusions proposed by the paper. |
| format | Article |
| id | doaj-art-e65b16d3f13846c2afe3c1811035134f |
| institution | Kabale University |
| issn | 1687-5869 1687-5877 |
| language | English |
| publishDate | 2021-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Antennas and Propagation |
| spelling | doaj-art-e65b16d3f13846c2afe3c1811035134f2025-02-03T07:24:12ZengWileyInternational Journal of Antennas and Propagation1687-58691687-58772021-01-01202110.1155/2021/44475624447562The Analysis of Using Spatial Smoothing for DOA Estimation of Coherent Signals in Sparse ArraysHaiyun Xu0Weijia Cui1Yuxi Du2Fengtong Mei3Bin Ba4National Digital System Engineering and Technological Research R & D Center, Zhengzhou, Henan 450002, ChinaNational Digital System Engineering and Technological Research R & D Center, Zhengzhou, Henan 450002, ChinaNational Digital System Engineering and Technological Research R & D Center, Zhengzhou, Henan 450002, ChinaNational Digital System Engineering and Technological Research R & D Center, Zhengzhou, Henan 450002, ChinaNational Digital System Engineering and Technological Research R & D Center, Zhengzhou, Henan 450002, ChinaWhen there is coexistence of uncorrelated and coherent signals in sparse arrays, the conventional algorithms for direction-of-arrival (DOA) estimation using difference coarray fail. In order to solve the problems, this paper analyzes the feasibility of using spatial smoothing in sparse arrays. Firstly, we summarize the two types of sparse arrays, one consisting of identical sparse subarrays and the other consisting of several uniform linear subarrays. Then, we give the feasibility analysis and the processes of applying spatial smoothing. At last, we discuss the performance of the number of detectable coherent signals in different sparse arrays. Numerical experiments prove the conclusions proposed by the paper.http://dx.doi.org/10.1155/2021/4447562 |
| spellingShingle | Haiyun Xu Weijia Cui Yuxi Du Fengtong Mei Bin Ba The Analysis of Using Spatial Smoothing for DOA Estimation of Coherent Signals in Sparse Arrays International Journal of Antennas and Propagation |
| title | The Analysis of Using Spatial Smoothing for DOA Estimation of Coherent Signals in Sparse Arrays |
| title_full | The Analysis of Using Spatial Smoothing for DOA Estimation of Coherent Signals in Sparse Arrays |
| title_fullStr | The Analysis of Using Spatial Smoothing for DOA Estimation of Coherent Signals in Sparse Arrays |
| title_full_unstemmed | The Analysis of Using Spatial Smoothing for DOA Estimation of Coherent Signals in Sparse Arrays |
| title_short | The Analysis of Using Spatial Smoothing for DOA Estimation of Coherent Signals in Sparse Arrays |
| title_sort | analysis of using spatial smoothing for doa estimation of coherent signals in sparse arrays |
| url | http://dx.doi.org/10.1155/2021/4447562 |
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