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| Research on ADCP Pool Calibration Methodology |
| LUO Hui1,JIAO Junsheng1,TAO Ran2,SHI Zhanhong3,FANG Weihua2,LIU Jianyao1 |
1. Key Laboratory of In Situ Metrology Ministry of Education, China Jiliang University, Hangzhou, Zhejiang 310018, China
2. Nanjing Institute of Water Resources and Hydrology Automation, Nanjing, Jiangsu 210012, China
3. Inspecting and Testing Center for Hydrological & Geotechnical Instruments Quality,MWR, Nanjing, Jiangsu 210029, China |
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Abstract A method for calibration of acoustic Doppler current profile (ADCP) in laboratory anechoic pool is proposed. By transmitting the simulation echo signal, the frequency and delay time are used to realize the magnitude traceability, and then the velocity and depth are calibrated. A set of ADCP pool calibration system was developed. Using 2-beam 614.4kHz ADCP as calibration object, different velocity distributions were designed to realize velocity calibration of water layer, and the calibration under non-limiting bottom tracking signal was explored. Multi-beam and single-beam comparison experiments were designed. The results show that the maximum uncertainty is 2.30mm /s at 0~ 2.5m /s, which verifies the feasibility of this method.
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Received: 31 August 2023
Published: 04 July 2024
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| Fund:National Key R&D Program of China |
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2024, Vol. 45 
