多元线性回归法在雷达波测流系统中的应用分析——以黑河正义峡水文站为例

Application of multiple linear regression method in radar wave current measurement system:a case of Zhengyixia hydrological station on Heihe River

为提高雷达波测流系统的测量精度,采用正义峡水文站TEL-12双轨全自动雷达波在线测流系统实测资料,建立了计算断面平均流速的最小二乘多元线性回归模型。该模型输入量为水面测点流速和水位,输出量为不同水位级下断面平均流速的计算公式。结果表明:通过对该模型进行验证分析,发现该模型精度较高,可较好地应用于雷达波测流系统。研究成果可为雷达波测流系统的流量计算提供借鉴。

In order to improve the flow monitoring accuracy of the radar wave flow measurement system,based on the data of Zhengyixia hydrological station measured from the TEL-12 dual track automatic radar wave online flow measurement system,we constructed the least square multiple linear regression model for calculating average velocity of cross-section.Input of the model are velocity of water surface measurement point and water level,and output of the model are average velocity of cross-section under different water levels.The results showed that accuracy of the model is high by verification analysis.The research results could provide reference for flow calculation of radar wave flow measurement system.