Direction Finding Using Multiple Sum and Difference Patterns in 4D Antenna Arrays
Traditional monopulse systems used for direction finding usually face the contradiction between high angle precision and wide angle-searching field, and a compromise has to be made. In this paper, the time modulation technique in four-dimensional (4D) antenna array is introduced into the conventiona...
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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/10.1155/2014/392895 |
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| author | Quanjiang Zhu Shiwen Yang Ruilin Yao Zaiping Nie |
| author_facet | Quanjiang Zhu Shiwen Yang Ruilin Yao Zaiping Nie |
| author_sort | Quanjiang Zhu |
| collection | DOAJ |
| description | Traditional monopulse systems used for direction finding usually face the contradiction between high angle precision and wide angle-searching field, and a compromise has to be made. In this paper, the time modulation technique in four-dimensional (4D) antenna array is introduced into the conventional phase-comparison monopulse to form a novel direction-finding system, in which both high angle resolution and wide field-of-view are realized. The full 4D array is divided into two subarrays and the differential evolution (DE) algorithm is used to optimize the time sequence of each subarray to generate multibeams at the center frequency and low sidebands. Then the multibeams of the two subarrays are phase-compared with each other and multiple pairs of sum-difference beams are formed at different sidebands and point to different spatial angles. The proposed direction-finding system covers a large field-of-view of up to ±60° and simultaneously maintains the advantages of monopulse systems, such as high angle precision and low computation complexity. Theoretical analysis and experimental results validate the effectiveness of the proposed system. |
| format | Article |
| id | doaj-art-06431e60395c497faf508110ffcc9693 |
| 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-06431e60395c497faf508110ffcc96932025-02-03T01:22:02ZengWileyInternational Journal of Antennas and Propagation1687-58691687-58772014-01-01201410.1155/2014/392895392895Direction Finding Using Multiple Sum and Difference Patterns in 4D Antenna ArraysQuanjiang Zhu0Shiwen Yang1Ruilin Yao2Zaiping Nie3School of Electronic Engineering, University of Electronic Science and Technology of China (UESTC), Chengdu 611731, ChinaSchool of Electronic Engineering, University of Electronic Science and Technology of China (UESTC), Chengdu 611731, ChinaSchool of Electronic Engineering, University of Electronic Science and Technology of China (UESTC), Chengdu 611731, ChinaSchool of Electronic Engineering, University of Electronic Science and Technology of China (UESTC), Chengdu 611731, ChinaTraditional monopulse systems used for direction finding usually face the contradiction between high angle precision and wide angle-searching field, and a compromise has to be made. In this paper, the time modulation technique in four-dimensional (4D) antenna array is introduced into the conventional phase-comparison monopulse to form a novel direction-finding system, in which both high angle resolution and wide field-of-view are realized. The full 4D array is divided into two subarrays and the differential evolution (DE) algorithm is used to optimize the time sequence of each subarray to generate multibeams at the center frequency and low sidebands. Then the multibeams of the two subarrays are phase-compared with each other and multiple pairs of sum-difference beams are formed at different sidebands and point to different spatial angles. The proposed direction-finding system covers a large field-of-view of up to ±60° and simultaneously maintains the advantages of monopulse systems, such as high angle precision and low computation complexity. Theoretical analysis and experimental results validate the effectiveness of the proposed system.http://dx.doi.org/10.1155/2014/392895 |
| spellingShingle | Quanjiang Zhu Shiwen Yang Ruilin Yao Zaiping Nie Direction Finding Using Multiple Sum and Difference Patterns in 4D Antenna Arrays International Journal of Antennas and Propagation |
| title | Direction Finding Using Multiple Sum and Difference Patterns in 4D Antenna Arrays |
| title_full | Direction Finding Using Multiple Sum and Difference Patterns in 4D Antenna Arrays |
| title_fullStr | Direction Finding Using Multiple Sum and Difference Patterns in 4D Antenna Arrays |
| title_full_unstemmed | Direction Finding Using Multiple Sum and Difference Patterns in 4D Antenna Arrays |
| title_short | Direction Finding Using Multiple Sum and Difference Patterns in 4D Antenna Arrays |
| title_sort | direction finding using multiple sum and difference patterns in 4d antenna arrays |
| url | http://dx.doi.org/10.1155/2014/392895 |
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