Analysis of the Influence of Water Level Acquisition Frequency on Data Results in Hydrology Telemetry
With the development of information technology,a large number of water level telemetry automatic measurement and reporting systems have been built in China,which automatically collect water levels of rivers,lakes and reservoirs,as well as the water projects.The data collection frequency is once-in-5-min.As the water level is easily affected by external factors such as the operation of project opening and closing,tides,wind and waves,and the adjustment operation of lock water delivery system,the typical hydrological stations affected by different external factors are selected in China,in which the float type water level encoder is widely used to collect water level data once per second.On the other hand,the filter analysis software is developed,and collection frequency data of 1,2,5 and 10 minutes are formed for compilation.By comparing the integration results of the manual self-recording water level meter,the paper analyzes and studies the influence of the accuracy of the daily average water level and discharge(water volume)data results with different collection frequency,which proves the automatic collection frequency of water level meeting the accuracy requirements of the hydrological test specification,and achieves accurate measurement of water level,accurately calculates the flow and water volume process,providing a basis for further promoting the hydrological modernization.
Water level telemetryAcquisition frequencyAccuracy of resultsHydrologic information
万方数据
维普
