Gain and phase errors calibration for joint time reversal and PCA dimensionality reduction over multipath environment
Aiming at the problem of inaccurate calibration of the array gain and phase errors caused by the signal source coherence in the multipath environment, a combination of time reversal (TR) and principal component analysis (PCA) calibration algorithm was proposed.The space-time synchronization focusing...
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| Format: | Article |
| Language: | zho |
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Editorial Department of Journal on Communications
2021-08-01
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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.2021145/ |
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| author | Fangwei LI Jiawen LU Mingyue WANG |
| author_facet | Fangwei LI Jiawen LU Mingyue WANG |
| author_sort | Fangwei LI |
| collection | DOAJ |
| description | Aiming at the problem of inaccurate calibration of the array gain and phase errors caused by the signal source coherence in the multipath environment, a combination of time reversal (TR) and principal component analysis (PCA) calibration algorithm was proposed.The space-time synchronization focusing characteristic of TR was applied to obtain the return signal matrix of the target to suppress the multipath effect and reduce the signal source coherence.However, in view of the problem that the introduction of TR would make the dimension of the return signal matrix received by the array larger and increase the calculation complexity of the algorithm, PCA was utilized to implement dimensionality reduction reconstruction on the revised TR return signal matrix to reduce the computational complexity.The simulation results show that the proposed algorithm can effectively calibrate the gain and phase errors of the array with lower computational complexity in a multipath environment. |
| format | Article |
| id | doaj-art-0a54e543a3674b84abbd97d47618307a |
| institution | Kabale University |
| issn | 1000-436X |
| language | zho |
| publishDate | 2021-08-01 |
| publisher | Editorial Department of Journal on Communications |
| record_format | Article |
| series | Tongxin xuebao |
| spelling | doaj-art-0a54e543a3674b84abbd97d47618307a2025-01-14T07:22:21ZzhoEditorial Department of Journal on CommunicationsTongxin xuebao1000-436X2021-08-014211111959743387Gain and phase errors calibration for joint time reversal and PCA dimensionality reduction over multipath environmentFangwei LIJiawen LUMingyue WANGAiming at the problem of inaccurate calibration of the array gain and phase errors caused by the signal source coherence in the multipath environment, a combination of time reversal (TR) and principal component analysis (PCA) calibration algorithm was proposed.The space-time synchronization focusing characteristic of TR was applied to obtain the return signal matrix of the target to suppress the multipath effect and reduce the signal source coherence.However, in view of the problem that the introduction of TR would make the dimension of the return signal matrix received by the array larger and increase the calculation complexity of the algorithm, PCA was utilized to implement dimensionality reduction reconstruction on the revised TR return signal matrix to reduce the computational complexity.The simulation results show that the proposed algorithm can effectively calibrate the gain and phase errors of the array with lower computational complexity in a multipath environment.http://www.joconline.com.cn/zh/article/doi/10.11959/j.issn.1000-436x.2021145/multipath effecttime reversalgain and phase errors calibrationprincipal component analysis |
| spellingShingle | Fangwei LI Jiawen LU Mingyue WANG Gain and phase errors calibration for joint time reversal and PCA dimensionality reduction over multipath environment Tongxin xuebao multipath effect time reversal gain and phase errors calibration principal component analysis |
| title | Gain and phase errors calibration for joint time reversal and PCA dimensionality reduction over multipath environment |
| title_full | Gain and phase errors calibration for joint time reversal and PCA dimensionality reduction over multipath environment |
| title_fullStr | Gain and phase errors calibration for joint time reversal and PCA dimensionality reduction over multipath environment |
| title_full_unstemmed | Gain and phase errors calibration for joint time reversal and PCA dimensionality reduction over multipath environment |
| title_short | Gain and phase errors calibration for joint time reversal and PCA dimensionality reduction over multipath environment |
| title_sort | gain and phase errors calibration for joint time reversal and pca dimensionality reduction over multipath environment |
| topic | multipath effect time reversal gain and phase errors calibration principal component analysis |
| url | http://www.joconline.com.cn/zh/article/doi/10.11959/j.issn.1000-436x.2021145/ |
| work_keys_str_mv | AT fangweili gainandphaseerrorscalibrationforjointtimereversalandpcadimensionalityreductionovermultipathenvironment AT jiawenlu gainandphaseerrorscalibrationforjointtimereversalandpcadimensionalityreductionovermultipathenvironment AT mingyuewang gainandphaseerrorscalibrationforjointtimereversalandpcadimensionalityreductionovermultipathenvironment |