非接触式雷达测速系统在线流量比测率定分析

Analysis of Online Flow Comparison and Calibration for Non-contact Radar Speed Measurement System

现代化水文监测对于实时雨水情况监测及预警,保障城市防汛减灾应急处理有基础性支撑作用。以沙田水文站水文监测为背景,建立由RG30-T探头雷达测速仪、CR数据采集系统组成的在线非接触式雷达流量监测系统。为检验雷达测速仪的测验精度,现进行率定分析,进而建立并合理校验代表流速~断面平均流速、水位~流量关系的关系。进一步提高了中小河流的水情预警预报能力,为今后沙田河流域精确防汛预报鉴定了基础。

Modern hydrological monitoring plays a fundamental supporting role in real-time monitoring and early warning of rainwater conditions,ensuring emergency response to urban flood prevention and disaster reduction.Based on the hydrological monitoring of Sha Tin Hydrological Station,an online non-contact radar flow monitoring system consisting of RG30-T probe radar velocimeter and CR data acquisition system has been established.To verify the testing accuracy of the radar velocimeter,a calibration analysis is conducted to establish and reasonably verify the relationship between the representative flow velocity,the average flow velocity of the cross-section,and the water level flow rate.It further improves the water regime early warning and prediction capabilities of small and medium-sized rivers,laying the foundation for accurate flood prevention and prediction appraisal in the Shatian River Basin in the future.