Radar flow measurement technology has been gradually popularized for monitoring and managing the water resources in irrigated areas,and investigating its flow measurement accuracy becomes a hot topic.In this study,taking a typical radar measurement section in Dujiangyan irrigation district(located at the Heishi river outlet near the junction between Chongzhou and Xinjin county)as an example,the accuracy and reliability of rotating radar flow measurement technology were analyzed based on comparing with the benchmark water depth-discharge data measured by ADCP.It was found that the overall correlation between rotating radar measured data and the benchmark water depth-discharge by ADCP is good.However,there are also abundant measurement points with large deviations,which leads to large systematic flow measurement deviation(15%,with a quite high uncertainty of 103%).Given that large measurement deviations mainly occur at low water level and discharge conditions,it is suggested to perform flow measurements at high water level and discharge conditions to obtain high accuracy and reliability results.
NETL
NSTL
维普
万方数据
