中文
Cite this article:宋秋英,赵德芳,马英,等.依据上下游水位差插补雷达测流数据的试验研究[J].灌溉排水学报,,():-.
SONG Qiuying,ZHAO Defang,MA Ying,et al.依据上下游水位差插补雷达测流数据的试验研究[J].灌溉排水学报,,():-.
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DOI:
Experimental study of interpolation of radar flow measurement data based on upstream and downstream water level differences
SONG Qiuying1, ZHAO Defang2, MA Ying3, liu enmin3
1.Qihe Bureau of water resources;2.Lingcheng Bureau of water resources;3.Institute of Geographic Sciences and Natural Resources Research, CAS
Abstract:
【Objective】To solve the large error problem of Doppler radar probelm in the case of low flow velocity measurement in irrigation area.【Method】The discharge and depth of section were measured by sectional flow measurement. At the same time, a high-precision pressure and water level sensor was used to measure upstream and downstream water level elevation, and the flow-water level difference was regression fitted.【Result】Water level elevation difference and discharge at different flow rates are quadratic and highly correlated, water level difference - section depth - discharge is a complex correlation; the relationship between water level difference and discharge measured by radar at normal flow rates is fitted to a quadratic function curve, R2 value of 0.981; the product of water level difference and relative water depth as a driving factor, and the discharge to establish a relationship to obtain the quadratic function curve, R2 value of 0.9923.【Conclusion】Therefore, the water level difference and discharge data at different depths can be used to establish a relationship for estimating the discharge at low velocities, so as to compensate for the shortcomings of radar flow measurement.
Key words:  Doppler radar flow measurement; Starting velocity; Water level difference; Discharge