Constrained Widely Linear Beamforming Antijammer Technique for Satellite-Borne Distributed Sensor Data Acquisition System
Widely linear (WL) adaptive beamforming algorithms are proposed based on constrained minimum variance (CMV) and constrained constant modulus (CCM) criteria, respectively, to fully exploit both the desired signal and interferences' noncircularity. Modified conjugate gradient (MCG) algorithm is e...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2016-07-01
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| Series: | International Journal of Distributed Sensor Networks |
| Online Access: | https://doi.org/10.1177/155014777698358 |
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| _version_ | 1849408969543516160 |
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| author | Yongyong Wang Guang Liang Lulu Zhao Jinpei Yu Lianxing He |
| author_facet | Yongyong Wang Guang Liang Lulu Zhao Jinpei Yu Lianxing He |
| author_sort | Yongyong Wang |
| collection | DOAJ |
| description | Widely linear (WL) adaptive beamforming algorithms are proposed based on constrained minimum variance (CMV) and constrained constant modulus (CCM) criteria, respectively, to fully exploit both the desired signal and interferences' noncircularity. Modified conjugate gradient (MCG) algorithm is employed to ensure convergence with one iteration per sample. To further facilitate the adaptive processing, CCM criterion based WL beamforming algorithm is modified by second-order local approximation. Global convergence of the proposed algorithms is analyzed and constraints of parameters are given. Results of numerical simulations demonstrate that the proposed WL CCM beamformer has superior performance over WL CMV beamformer and conventional beamformers in convergence rate, robustness against direction of arrival (DOA) mismatch, and the noncircularity coefficient estimation error, while the former two have comparable low complexities without numerical instability. |
| format | Article |
| id | doaj-art-77ab2b29ad98436089fc4784067ae8e4 |
| institution | Kabale University |
| issn | 1550-1477 |
| language | English |
| publishDate | 2016-07-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Distributed Sensor Networks |
| spelling | doaj-art-77ab2b29ad98436089fc4784067ae8e42025-08-20T03:35:38ZengWileyInternational Journal of Distributed Sensor Networks1550-14772016-07-011210.1177/155014777698358Constrained Widely Linear Beamforming Antijammer Technique for Satellite-Borne Distributed Sensor Data Acquisition SystemYongyong Wang0Guang Liang1Lulu Zhao2Jinpei Yu3Lianxing He4 Shanghai Engineering Center of Microsatellites, Chinese Academy of Sciences, Shanghai 201210, China Shanghai Engineering Center of Microsatellites, Chinese Academy of Sciences, Shanghai 201210, China Shanghai Engineering Center of Microsatellites, Chinese Academy of Sciences, Shanghai 201210, China The Joint Key Laboratory of Microsatellites, Chinese Academy of Sciences, Shanghai 201210, China Shanghai Engineering Center of Microsatellites, Chinese Academy of Sciences, Shanghai 201210, ChinaWidely linear (WL) adaptive beamforming algorithms are proposed based on constrained minimum variance (CMV) and constrained constant modulus (CCM) criteria, respectively, to fully exploit both the desired signal and interferences' noncircularity. Modified conjugate gradient (MCG) algorithm is employed to ensure convergence with one iteration per sample. To further facilitate the adaptive processing, CCM criterion based WL beamforming algorithm is modified by second-order local approximation. Global convergence of the proposed algorithms is analyzed and constraints of parameters are given. Results of numerical simulations demonstrate that the proposed WL CCM beamformer has superior performance over WL CMV beamformer and conventional beamformers in convergence rate, robustness against direction of arrival (DOA) mismatch, and the noncircularity coefficient estimation error, while the former two have comparable low complexities without numerical instability.https://doi.org/10.1177/155014777698358 |
| spellingShingle | Yongyong Wang Guang Liang Lulu Zhao Jinpei Yu Lianxing He Constrained Widely Linear Beamforming Antijammer Technique for Satellite-Borne Distributed Sensor Data Acquisition System International Journal of Distributed Sensor Networks |
| title | Constrained Widely Linear Beamforming Antijammer Technique for Satellite-Borne Distributed Sensor Data Acquisition System |
| title_full | Constrained Widely Linear Beamforming Antijammer Technique for Satellite-Borne Distributed Sensor Data Acquisition System |
| title_fullStr | Constrained Widely Linear Beamforming Antijammer Technique for Satellite-Borne Distributed Sensor Data Acquisition System |
| title_full_unstemmed | Constrained Widely Linear Beamforming Antijammer Technique for Satellite-Borne Distributed Sensor Data Acquisition System |
| title_short | Constrained Widely Linear Beamforming Antijammer Technique for Satellite-Borne Distributed Sensor Data Acquisition System |
| title_sort | constrained widely linear beamforming antijammer technique for satellite borne distributed sensor data acquisition system |
| url | https://doi.org/10.1177/155014777698358 |
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