ADCP水池校准方法研究  

Research on ADCP Pool Calibration Methodology

作　　者：罗辉 焦君圣 陶然 史占红 方卫华[2] 刘建遥 LUO Hui;JIAO Junsheng;TAO Ran;SHI Zhanhong;FANG Weihua;LIU Jianyao(Key Laboratory of In Situ Metrology Ministry of Education,China Jiliang University,Hangzhou,Zhejiang 310018,China;Nanjing Institute of Water Resources and Hydrology Automation,Nanjing,Jiangsu 210012,China;Inspecting and Testing Center for Hydrological&Geotechnical Instrument s Quality,MWR,Nanjing,Jiangsu 210029,China)

机构地区：[1]中国计量大学原位计量教育部重点实验室,浙江杭州310018 [2]南京水利水文自动化研究所,江苏南京210012 [3]水利部水文仪器及岩土工程仪器质量监督检验测试中心,江苏南京210029

出　　处：《计量学报》2024年第7期1055-1063,共9页Acta Metrologica Sinica

摘　　要：提出一种在实验室消声水池环境下对声学多普勒流速剖面仪(ADCP)进行校准的方法。通过发射仿真回波信号,利用频率和延时时间实现量值溯源,进而实现对流速和深度的校准。研制了一套ADCP水池校准系统,以2波束614.4 kHz ADCP为校准对象,设计不同的流速分布实现对水层流速校准,探究底跟踪信号非限幅下的校准,设计多波束和单波束对比实验。对底跟踪速度进行不确定度评定,结果表明,在0~2.5 m/s速度下,不确定度最大为2.30 mm/s,验证了该校准方法的可行性。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 614.4 kHz 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 2.30 mm/s at 0~2.5 m/s,which verifies the feasibility of this method.

关 键 词：水声计量 声学多普勒流速剖面仪 水池校准 水声回波建模 不确定度分析 流速校准 

分 类 号：TB95[一般工业技术—计量学] TB937[机械工程—测试计量技术及仪器]