DOA Estimation of Two-Dimensional Coherently Distributed Sources Based on Spatial Smoothing of Uniform Rectangular Arrays
Aiming at the direction-of-arrival (DOA) estimation of two-dimensional (2D) coherently distributed (CD) sources which are coherent with each other, we explore the propagator method based on spatial smoothing of a uniform rectangular array (URA). The rotational invariance relationships with respect t...
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| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2019-01-01
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| Series: | International Journal of Antennas and Propagation |
| Online Access: | http://dx.doi.org/10.1155/2019/4816183 |
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| author | Tao Wu Yiwen Li Xiaofeng Zhang Yijie Huang Qingyue Gu Chaoqi Fu |
| author_facet | Tao Wu Yiwen Li Xiaofeng Zhang Yijie Huang Qingyue Gu Chaoqi Fu |
| author_sort | Tao Wu |
| collection | DOAJ |
| description | Aiming at the direction-of-arrival (DOA) estimation of two-dimensional (2D) coherently distributed (CD) sources which are coherent with each other, we explore the propagator method based on spatial smoothing of a uniform rectangular array (URA). The rotational invariance relationships with respect to the nominal azimuth and nominal elevation are obtained under the small angular spreads assumption. A propagator operator is constructed through spatial smoothing of sample covariance matrices firstly. Then, combination of propagator and identical matrix is divided according to rotational operators, and the nominal angles can be obtained through eigendecomposition lastly. Realizing angle matching automatically, the proposed method can estimate multiple DOAs of 2D coherent CD sources without spectral peak searching and prior knowledge of deterministic angular signal distribution function. Simulations are conducted to verify the effectiveness of the proposed method. |
| format | Article |
| id | doaj-art-09fde3aa37e8491ca9dd9cb2390cf683 |
| institution | Kabale University |
| issn | 1687-5869 1687-5877 |
| language | English |
| publishDate | 2019-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Antennas and Propagation |
| spelling | doaj-art-09fde3aa37e8491ca9dd9cb2390cf6832025-02-03T01:23:26ZengWileyInternational Journal of Antennas and Propagation1687-58691687-58772019-01-01201910.1155/2019/48161834816183DOA Estimation of Two-Dimensional Coherently Distributed Sources Based on Spatial Smoothing of Uniform Rectangular ArraysTao Wu0Yiwen Li1Xiaofeng Zhang2Yijie Huang3Qingyue Gu4Chaoqi Fu5Equipment Management and UAV College, Air Force Engineering University, Xi’an 710051, Shaanxi, ChinaScience and Technology on Combustion, Thermal-Structure and Internal Flow Laboratory, Northwestern Polytechnical University, Xi’an 710051, Shaanxi, ChinaEquipment Management and UAV College, Air Force Engineering University, Xi’an 710051, Shaanxi, ChinaSchool of Automation, Northwestern Polytechnical University, Xi’an 710072, Shaanxi, ChinaSchool of Marine, Northwestern Polytechnical University, Xi’an 710072, Shaanxi, ChinaEquipment Management and UAV College, Air Force Engineering University, Xi’an 710051, Shaanxi, ChinaAiming at the direction-of-arrival (DOA) estimation of two-dimensional (2D) coherently distributed (CD) sources which are coherent with each other, we explore the propagator method based on spatial smoothing of a uniform rectangular array (URA). The rotational invariance relationships with respect to the nominal azimuth and nominal elevation are obtained under the small angular spreads assumption. A propagator operator is constructed through spatial smoothing of sample covariance matrices firstly. Then, combination of propagator and identical matrix is divided according to rotational operators, and the nominal angles can be obtained through eigendecomposition lastly. Realizing angle matching automatically, the proposed method can estimate multiple DOAs of 2D coherent CD sources without spectral peak searching and prior knowledge of deterministic angular signal distribution function. Simulations are conducted to verify the effectiveness of the proposed method.http://dx.doi.org/10.1155/2019/4816183 |
| spellingShingle | Tao Wu Yiwen Li Xiaofeng Zhang Yijie Huang Qingyue Gu Chaoqi Fu DOA Estimation of Two-Dimensional Coherently Distributed Sources Based on Spatial Smoothing of Uniform Rectangular Arrays International Journal of Antennas and Propagation |
| title | DOA Estimation of Two-Dimensional Coherently Distributed Sources Based on Spatial Smoothing of Uniform Rectangular Arrays |
| title_full | DOA Estimation of Two-Dimensional Coherently Distributed Sources Based on Spatial Smoothing of Uniform Rectangular Arrays |
| title_fullStr | DOA Estimation of Two-Dimensional Coherently Distributed Sources Based on Spatial Smoothing of Uniform Rectangular Arrays |
| title_full_unstemmed | DOA Estimation of Two-Dimensional Coherently Distributed Sources Based on Spatial Smoothing of Uniform Rectangular Arrays |
| title_short | DOA Estimation of Two-Dimensional Coherently Distributed Sources Based on Spatial Smoothing of Uniform Rectangular Arrays |
| title_sort | doa estimation of two dimensional coherently distributed sources based on spatial smoothing of uniform rectangular arrays |
| url | http://dx.doi.org/10.1155/2019/4816183 |
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