High Accuracy 2D-DOA Estimation for Conformal Array Using PARAFAC
Due to the polarization diversity (PD) of element patterns caused by the varying curvature of the conformal carrier, the conventional direction-of-arrival (DOA) estimation algorithms could not be applied to the conformal array. In order to describe the PD of conformal array, the polarization paramet...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2014-01-01
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| Series: | International Journal of Antennas and Propagation |
| Online Access: | http://dx.doi.org/10.1155/2014/394707 |
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| author | Liangtian Wan Weijian Si Lutao Liu Zuoxi Tian Naixing Feng |
| author_facet | Liangtian Wan Weijian Si Lutao Liu Zuoxi Tian Naixing Feng |
| author_sort | Liangtian Wan |
| collection | DOAJ |
| description | Due to the polarization diversity (PD) of element patterns caused by the varying curvature of the conformal carrier, the conventional direction-of-arrival (DOA) estimation algorithms could not be applied to the conformal array. In order to describe the PD of conformal array, the polarization parameter is considered in the snapshot data model. The paramount difficulty for DOA estimation is the coupling between the angle information and polarization parameter. Based on the characteristic of the cylindrical conformal array, the decoupling between the polarization parameter and DOA can be realized with a specially designed array structure. 2D-DOA estimation of the cylindrical conformal array is accomplished via parallel factor analysis (PARAFAC) theory. To avoid parameter pairing problem, the algorithm forms a PARAFAC model of the covariance matrices in the covariance domain. The proposed algorithm can also be generalized to other conformal array structures and nonuniform noise scenario. Cramer-Rao bound (CRB) is derived and simulation results with the cylindrical conformal array are presented to verify the performance of the proposed algorithm. |
| format | Article |
| id | doaj-art-46494ff38bd14cfcbf215fb43a821f0f |
| 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-46494ff38bd14cfcbf215fb43a821f0f2025-02-03T05:49:44ZengWileyInternational Journal of Antennas and Propagation1687-58691687-58772014-01-01201410.1155/2014/394707394707High Accuracy 2D-DOA Estimation for Conformal Array Using PARAFACLiangtian Wan0Weijian Si1Lutao Liu2Zuoxi Tian3Naixing Feng4Department of Information and Communication Engineering, Harbin Engineering University, Harbin 150001, ChinaDepartment of Information and Communication Engineering, Harbin Engineering University, Harbin 150001, ChinaDepartment of Information and Communication Engineering, Harbin Engineering University, Harbin 150001, ChinaScience and Technology on Underwater Test and Control Laboratory, Dalian 116013, ChinaInstitute of Electromagnetics and Acoustics, Xiamen University, Xiamen 361005, ChinaDue to the polarization diversity (PD) of element patterns caused by the varying curvature of the conformal carrier, the conventional direction-of-arrival (DOA) estimation algorithms could not be applied to the conformal array. In order to describe the PD of conformal array, the polarization parameter is considered in the snapshot data model. The paramount difficulty for DOA estimation is the coupling between the angle information and polarization parameter. Based on the characteristic of the cylindrical conformal array, the decoupling between the polarization parameter and DOA can be realized with a specially designed array structure. 2D-DOA estimation of the cylindrical conformal array is accomplished via parallel factor analysis (PARAFAC) theory. To avoid parameter pairing problem, the algorithm forms a PARAFAC model of the covariance matrices in the covariance domain. The proposed algorithm can also be generalized to other conformal array structures and nonuniform noise scenario. Cramer-Rao bound (CRB) is derived and simulation results with the cylindrical conformal array are presented to verify the performance of the proposed algorithm.http://dx.doi.org/10.1155/2014/394707 |
| spellingShingle | Liangtian Wan Weijian Si Lutao Liu Zuoxi Tian Naixing Feng High Accuracy 2D-DOA Estimation for Conformal Array Using PARAFAC International Journal of Antennas and Propagation |
| title | High Accuracy 2D-DOA Estimation for Conformal Array Using PARAFAC |
| title_full | High Accuracy 2D-DOA Estimation for Conformal Array Using PARAFAC |
| title_fullStr | High Accuracy 2D-DOA Estimation for Conformal Array Using PARAFAC |
| title_full_unstemmed | High Accuracy 2D-DOA Estimation for Conformal Array Using PARAFAC |
| title_short | High Accuracy 2D-DOA Estimation for Conformal Array Using PARAFAC |
| title_sort | high accuracy 2d doa estimation for conformal array using parafac |
| url | http://dx.doi.org/10.1155/2014/394707 |
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