Array amplitude-phase and mutual coupling error joint correction method based on sparse Bayesian
In the actual array direction finding system, there are often a variety of errors such as amplitude and phase, mutual coupling, which lead to serious deterioration of array direction finding performance.In order to solve the problem of array direction finding misalignment in the presence of low sign...
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| Format: | Article |
| Language: | zho |
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Editorial Department of Journal on Communications
2022-09-01
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| Series: | Tongxin xuebao |
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| Online Access: | http://www.joconline.com.cn/zh/article/doi/10.11959/j.issn.1000-436x.2022175/ |
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| author | Ding WANG Weigang GAO Zhidong WU |
| author_facet | Ding WANG Weigang GAO Zhidong WU |
| author_sort | Ding WANG |
| collection | DOAJ |
| description | In the actual array direction finding system, there are often a variety of errors such as amplitude and phase, mutual coupling, which lead to serious deterioration of array direction finding performance.In order to solve the problem of array direction finding misalignment in the presence of low signal-to-noise ratio, small snapshots and multiple errors, the spatial sparsity of signals were introduced, and Bayesian sparse reconstruction technology was used to solve the passive correction and joint estimation of array signal azimuth in the presence of amplitude-phase and mutual coupling errors.The over-complete model of the received signal with error was constructed, and the posterior probability density function of the received signal was obtained.The EM algorithm was used to iteratively optimize the probability density function to solve the corresponding parameters.At the same time, the CRLB of array error and signal azimuth was derived, and by experimental simulation verifies the effectiveness of the proposed method. |
| format | Article |
| id | doaj-art-bd5b574d1b294d8589e1ccb4fe68df2d |
| institution | Kabale University |
| issn | 1000-436X |
| language | zho |
| publishDate | 2022-09-01 |
| publisher | Editorial Department of Journal on Communications |
| record_format | Article |
| series | Tongxin xuebao |
| spelling | doaj-art-bd5b574d1b294d8589e1ccb4fe68df2d2025-01-14T06:28:47ZzhoEditorial Department of Journal on CommunicationsTongxin xuebao1000-436X2022-09-014311212059391614Array amplitude-phase and mutual coupling error joint correction method based on sparse BayesianDing WANGWeigang GAOZhidong WUIn the actual array direction finding system, there are often a variety of errors such as amplitude and phase, mutual coupling, which lead to serious deterioration of array direction finding performance.In order to solve the problem of array direction finding misalignment in the presence of low signal-to-noise ratio, small snapshots and multiple errors, the spatial sparsity of signals were introduced, and Bayesian sparse reconstruction technology was used to solve the passive correction and joint estimation of array signal azimuth in the presence of amplitude-phase and mutual coupling errors.The over-complete model of the received signal with error was constructed, and the posterior probability density function of the received signal was obtained.The EM algorithm was used to iteratively optimize the probability density function to solve the corresponding parameters.At the same time, the CRLB of array error and signal azimuth was derived, and by experimental simulation verifies the effectiveness of the proposed method.http://www.joconline.com.cn/zh/article/doi/10.11959/j.issn.1000-436x.2022175/amplitude-phase errormutual coupling errorsparse reconstructionDOA estimation |
| spellingShingle | Ding WANG Weigang GAO Zhidong WU Array amplitude-phase and mutual coupling error joint correction method based on sparse Bayesian Tongxin xuebao amplitude-phase error mutual coupling error sparse reconstruction DOA estimation |
| title | Array amplitude-phase and mutual coupling error joint correction method based on sparse Bayesian |
| title_full | Array amplitude-phase and mutual coupling error joint correction method based on sparse Bayesian |
| title_fullStr | Array amplitude-phase and mutual coupling error joint correction method based on sparse Bayesian |
| title_full_unstemmed | Array amplitude-phase and mutual coupling error joint correction method based on sparse Bayesian |
| title_short | Array amplitude-phase and mutual coupling error joint correction method based on sparse Bayesian |
| title_sort | array amplitude phase and mutual coupling error joint correction method based on sparse bayesian |
| topic | amplitude-phase error mutual coupling error sparse reconstruction DOA estimation |
| url | http://www.joconline.com.cn/zh/article/doi/10.11959/j.issn.1000-436x.2022175/ |
| work_keys_str_mv | AT dingwang arrayamplitudephaseandmutualcouplingerrorjointcorrectionmethodbasedonsparsebayesian AT weiganggao arrayamplitudephaseandmutualcouplingerrorjointcorrectionmethodbasedonsparsebayesian AT zhidongwu arrayamplitudephaseandmutualcouplingerrorjointcorrectionmethodbasedonsparsebayesian |