An Effective Technique for Enhancing Direction Finding Performance of Virtual Arrays
The array interpolation technology that is used to establish a virtual array from a real antenna array is widely used in direction finding. The traditional interpolation transformation technology causes significant bias in the directional-of-arrival (DOA) estimation due to its transform errors. In t...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Wiley
2014-01-01
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| Series: | International Journal of Antennas and Propagation |
| Online Access: | http://dx.doi.org/10.1155/2014/728463 |
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| _version_ | 1849308248344100864 |
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| author | Wenxing Li Xiaojun Mao Wenhua Yu Chongyi Yue |
| author_facet | Wenxing Li Xiaojun Mao Wenhua Yu Chongyi Yue |
| author_sort | Wenxing Li |
| collection | DOAJ |
| description | The array interpolation technology that is used to establish a virtual array from a real antenna array is widely used in direction finding. The traditional interpolation transformation technology causes significant bias in the directional-of-arrival (DOA) estimation due to its transform errors. In this paper, we proposed a modified interpolation method that significantly reduces bias in the DOA estimation of a virtual antenna array and improves the resolution capability. Using the projection concept, this paper projects the transformation matrix into the real array data covariance matrix; the operation not only enhances the signal subspace but also improves the orthogonality between the signal and noise subspace. Numerical results demonstrate the effectiveness of the proposed method. The proposed method can achieve better DOA estimation accuracy of virtual arrays and has a high resolution performance compared to the traditional interpolation method. |
| format | Article |
| id | doaj-art-101faa69f6004b289c01bcba3f395510 |
| institution | Kabale University |
| issn | 1687-5869 1687-5877 |
| language | English |
| publishDate | 2014-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Antennas and Propagation |
| spelling | doaj-art-101faa69f6004b289c01bcba3f3955102025-08-20T03:54:29ZengWileyInternational Journal of Antennas and Propagation1687-58691687-58772014-01-01201410.1155/2014/728463728463An Effective Technique for Enhancing Direction Finding Performance of Virtual ArraysWenxing Li0Xiaojun Mao1Wenhua Yu2Chongyi Yue3College of Information and Communication Engineering, Harbin Engineering University, Harbin 150001, ChinaCollege of Information and Communication Engineering, Harbin Engineering University, Harbin 150001, ChinaCollege of Information and Communication Engineering, Harbin Engineering University, Harbin 150001, ChinaCollege of Information and Communication Engineering, Harbin Engineering University, Harbin 150001, ChinaThe array interpolation technology that is used to establish a virtual array from a real antenna array is widely used in direction finding. The traditional interpolation transformation technology causes significant bias in the directional-of-arrival (DOA) estimation due to its transform errors. In this paper, we proposed a modified interpolation method that significantly reduces bias in the DOA estimation of a virtual antenna array and improves the resolution capability. Using the projection concept, this paper projects the transformation matrix into the real array data covariance matrix; the operation not only enhances the signal subspace but also improves the orthogonality between the signal and noise subspace. Numerical results demonstrate the effectiveness of the proposed method. The proposed method can achieve better DOA estimation accuracy of virtual arrays and has a high resolution performance compared to the traditional interpolation method.http://dx.doi.org/10.1155/2014/728463 |
| spellingShingle | Wenxing Li Xiaojun Mao Wenhua Yu Chongyi Yue An Effective Technique for Enhancing Direction Finding Performance of Virtual Arrays International Journal of Antennas and Propagation |
| title | An Effective Technique for Enhancing Direction Finding Performance of Virtual Arrays |
| title_full | An Effective Technique for Enhancing Direction Finding Performance of Virtual Arrays |
| title_fullStr | An Effective Technique for Enhancing Direction Finding Performance of Virtual Arrays |
| title_full_unstemmed | An Effective Technique for Enhancing Direction Finding Performance of Virtual Arrays |
| title_short | An Effective Technique for Enhancing Direction Finding Performance of Virtual Arrays |
| title_sort | effective technique for enhancing direction finding performance of virtual arrays |
| url | http://dx.doi.org/10.1155/2014/728463 |
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