A Rail Transit Speed Measurement Method Based on Dual-radarand Its Error Analysis
Radar is one of the most commonly used technical methods for measuring vehicle speed in rail transit. For traditional speed measurement method by single radar, accurately calibrating phase center height of antenna is necessary, which would introduce difficulties for project implementation to a great...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | zho |
| Published: |
Editorial Office of Control and Information Technology
2021-01-01
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| Series: | Kongzhi Yu Xinxi Jishu |
| Subjects: | |
| Online Access: | http://ctet.csrzic.com/thesisDetails#10.13889/j.issn.2096-5427.2021.01.005 |
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| Summary: | Radar is one of the most commonly used technical methods for measuring vehicle speed in rail transit. For traditional speed measurement method by single radar, accurately calibrating phase center height of antenna is necessary, which would introduce difficulties for project implementation to a greater or lesser extent. This paper introduces a dual-radar speed measurement method which could measure metro vehicle speed by calculating absolute height of radar in real-time based on both Doppler frequency and altitude difference information of dual-radar. The proposed method is easier to realize in practical engineering, more adaptable to environment than laser speed measurement method, and the cost of dual-radar system is less than half of the imported laser speed measurement device. Moreover, for system parameter optimization, this paper studies and analyses the influence factors of error of dual-radar method and the impact on precision of velocity measurement. Engineering test results show that the dual-radar speed measurement system has nearly the same test precision than that of the imported laser radar product. |
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| ISSN: | 2096-5427 |