Dynamic Calibration Method of Multichannel Amplitude and Phase Consistency in Meteor Radar
Meteor radar is a widely used technique for measuring wind in the mesosphere and lower thermosphere, with the key advantage of being unaffected by terrestrial weather conditions, thus enabling continuous operation. In all-sky interferometric meteor radar systems, amplitude and phase consistencies be...
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MDPI AG
2025-01-01
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| Series: | Remote Sensing |
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| Online Access: | https://www.mdpi.com/2072-4292/17/2/331 |
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| author | Yujian Jin Xiaolong Chen Songtao Huang Zhuo Chen Jing Li Wenhui Hao |
| author_facet | Yujian Jin Xiaolong Chen Songtao Huang Zhuo Chen Jing Li Wenhui Hao |
| author_sort | Yujian Jin |
| collection | DOAJ |
| description | Meteor radar is a widely used technique for measuring wind in the mesosphere and lower thermosphere, with the key advantage of being unaffected by terrestrial weather conditions, thus enabling continuous operation. In all-sky interferometric meteor radar systems, amplitude and phase consistencies between multiple channels exhibit dynamic variations over time, which can significantly degrade the accuracy of wind measurements. Despite the inherently dynamic nature of these inconsistencies, the majority of existing research predominantly employs static calibration methods to address these issues. In this study, we propose a dynamic adaptive calibration method that combines normalized least mean square and correlation algorithms, integrated with hardware design. We further assess the effectiveness of this method through numerical simulations and practical implementation on an independently developed meteor radar system with a five-channel receiver. The receiver facilitates the practical application of the proposed method by incorporating variable gain control circuits and high-precision synchronization analog-to-digital acquisition units, ensuring initial amplitude and phase consistency accuracy. In our dynamic calibration, initial coefficients are determined using a sliding correlation algorithm to assign preliminary weights, which are then refined through the proposed method. This method maximizes cross-channel consistencies, resulting in amplitude inconsistency of <0.0173 dB and phase inconsistency of <0.2064°. Repeated calibration experiments and their comparison with conventional static calibration methods demonstrate significant improvements in amplitude and phase consistency. These results validate the potential of the proposed method to enhance both the detection accuracy and wind inversion precision of meteor radar systems. |
| format | Article |
| id | doaj-art-56002d8d2fef43dc8bf76c54e9caedac |
| institution | Kabale University |
| issn | 2072-4292 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Remote Sensing |
| spelling | doaj-art-56002d8d2fef43dc8bf76c54e9caedac2025-01-24T13:48:09ZengMDPI AGRemote Sensing2072-42922025-01-0117233110.3390/rs17020331Dynamic Calibration Method of Multichannel Amplitude and Phase Consistency in Meteor RadarYujian Jin0Xiaolong Chen1Songtao Huang2Zhuo Chen3Jing Li4Wenhui Hao5School of Mechano-Electronic Engineering, Xidian University, Xi’an 710071, ChinaSchool of Mechano-Electronic Engineering, Xidian University, Xi’an 710071, ChinaSchool of Mechano-Electronic Engineering, Xidian University, Xi’an 710071, ChinaSchool of Mechano-Electronic Engineering, Xidian University, Xi’an 710071, ChinaSchool of Mechano-Electronic Engineering, Xidian University, Xi’an 710071, ChinaInformation Foundation Department, China Research Institute of Radiowave Propagation, Xinxiang 453003, ChinaMeteor radar is a widely used technique for measuring wind in the mesosphere and lower thermosphere, with the key advantage of being unaffected by terrestrial weather conditions, thus enabling continuous operation. In all-sky interferometric meteor radar systems, amplitude and phase consistencies between multiple channels exhibit dynamic variations over time, which can significantly degrade the accuracy of wind measurements. Despite the inherently dynamic nature of these inconsistencies, the majority of existing research predominantly employs static calibration methods to address these issues. In this study, we propose a dynamic adaptive calibration method that combines normalized least mean square and correlation algorithms, integrated with hardware design. We further assess the effectiveness of this method through numerical simulations and practical implementation on an independently developed meteor radar system with a five-channel receiver. The receiver facilitates the practical application of the proposed method by incorporating variable gain control circuits and high-precision synchronization analog-to-digital acquisition units, ensuring initial amplitude and phase consistency accuracy. In our dynamic calibration, initial coefficients are determined using a sliding correlation algorithm to assign preliminary weights, which are then refined through the proposed method. This method maximizes cross-channel consistencies, resulting in amplitude inconsistency of <0.0173 dB and phase inconsistency of <0.2064°. Repeated calibration experiments and their comparison with conventional static calibration methods demonstrate significant improvements in amplitude and phase consistency. These results validate the potential of the proposed method to enhance both the detection accuracy and wind inversion precision of meteor radar systems.https://www.mdpi.com/2072-4292/17/2/331meteor radaratmospheric detectiondynamic calibrationnormalized least mean square (NLMS) |
| spellingShingle | Yujian Jin Xiaolong Chen Songtao Huang Zhuo Chen Jing Li Wenhui Hao Dynamic Calibration Method of Multichannel Amplitude and Phase Consistency in Meteor Radar Remote Sensing meteor radar atmospheric detection dynamic calibration normalized least mean square (NLMS) |
| title | Dynamic Calibration Method of Multichannel Amplitude and Phase Consistency in Meteor Radar |
| title_full | Dynamic Calibration Method of Multichannel Amplitude and Phase Consistency in Meteor Radar |
| title_fullStr | Dynamic Calibration Method of Multichannel Amplitude and Phase Consistency in Meteor Radar |
| title_full_unstemmed | Dynamic Calibration Method of Multichannel Amplitude and Phase Consistency in Meteor Radar |
| title_short | Dynamic Calibration Method of Multichannel Amplitude and Phase Consistency in Meteor Radar |
| title_sort | dynamic calibration method of multichannel amplitude and phase consistency in meteor radar |
| topic | meteor radar atmospheric detection dynamic calibration normalized least mean square (NLMS) |
| url | https://www.mdpi.com/2072-4292/17/2/331 |
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