An Efficient 2-D DOA Estimation for a Cylindrical Conformal Array with Unknown Mutual Coupling
The limited space of a conformal array may lead to a serious mutual coupling effect, which will significantly affect the performance of direction of arrival (DOA) estimation algorithms. In this paper, an efficient 2-D direction finding method is developed in the presence of unknown mutual coupling f...
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| Format: | Article |
| Language: | English |
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Wiley
2018-01-01
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| Series: | International Journal of Antennas and Propagation |
| Online Access: | http://dx.doi.org/10.1155/2018/4015980 |
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| author | Chao Liu Shunian Yin |
| author_facet | Chao Liu Shunian Yin |
| author_sort | Chao Liu |
| collection | DOAJ |
| description | The limited space of a conformal array may lead to a serious mutual coupling effect, which will significantly affect the performance of direction of arrival (DOA) estimation algorithms. In this paper, an efficient 2-D direction finding method is developed in the presence of unknown mutual coupling for the uniform cylindrical conformal array (CCA). To avoid the time-consuming two-dimensional spectral peak searching, the 2-D DOA estimation is decoupled and divided into two 1-D DOA estimations. Elevation is first estimated based on a subarray estimation of signal parameters via rotation invariant technique (ESPRIT), and then azimuth is estimated based on the rank reduction (RARE) method by using the elevation estimation result. Consequently, the mutual coupling coefficients can be estimated after getting the DOA estimates. The proposed method can well calibrate the mutual coupling effect of a cylindrical array with a low computational complexity. The final simulation results corroborate our analysis. |
| format | Article |
| id | doaj-art-e3b445b7d2204ba59887eefc2eb8ece6 |
| institution | Kabale University |
| issn | 1687-5869 1687-5877 |
| language | English |
| publishDate | 2018-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Antennas and Propagation |
| spelling | doaj-art-e3b445b7d2204ba59887eefc2eb8ece62025-02-03T01:22:21ZengWileyInternational Journal of Antennas and Propagation1687-58691687-58772018-01-01201810.1155/2018/40159804015980An Efficient 2-D DOA Estimation for a Cylindrical Conformal Array with Unknown Mutual CouplingChao Liu0Shunian Yin1Department of Communication Engineering, Hefei University of Technology, Hefei, Anhui 230601, ChinaDepartment of Communication Engineering, Hefei University of Technology, Hefei, Anhui 230601, ChinaThe limited space of a conformal array may lead to a serious mutual coupling effect, which will significantly affect the performance of direction of arrival (DOA) estimation algorithms. In this paper, an efficient 2-D direction finding method is developed in the presence of unknown mutual coupling for the uniform cylindrical conformal array (CCA). To avoid the time-consuming two-dimensional spectral peak searching, the 2-D DOA estimation is decoupled and divided into two 1-D DOA estimations. Elevation is first estimated based on a subarray estimation of signal parameters via rotation invariant technique (ESPRIT), and then azimuth is estimated based on the rank reduction (RARE) method by using the elevation estimation result. Consequently, the mutual coupling coefficients can be estimated after getting the DOA estimates. The proposed method can well calibrate the mutual coupling effect of a cylindrical array with a low computational complexity. The final simulation results corroborate our analysis.http://dx.doi.org/10.1155/2018/4015980 |
| spellingShingle | Chao Liu Shunian Yin An Efficient 2-D DOA Estimation for a Cylindrical Conformal Array with Unknown Mutual Coupling International Journal of Antennas and Propagation |
| title | An Efficient 2-D DOA Estimation for a Cylindrical Conformal Array with Unknown Mutual Coupling |
| title_full | An Efficient 2-D DOA Estimation for a Cylindrical Conformal Array with Unknown Mutual Coupling |
| title_fullStr | An Efficient 2-D DOA Estimation for a Cylindrical Conformal Array with Unknown Mutual Coupling |
| title_full_unstemmed | An Efficient 2-D DOA Estimation for a Cylindrical Conformal Array with Unknown Mutual Coupling |
| title_short | An Efficient 2-D DOA Estimation for a Cylindrical Conformal Array with Unknown Mutual Coupling |
| title_sort | efficient 2 d doa estimation for a cylindrical conformal array with unknown mutual coupling |
| url | http://dx.doi.org/10.1155/2018/4015980 |
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