ADCP流量测验随机误差分析Ⅰ：随机不确定度预测模型

本文对ADCP流速测验随机误差引起的流量测验随机误差进行了分析，考虑了表层及底层盲区流速插补引起的误差以及由于走航测验对单砰标准差的放大，给出了ADCP流量测验随机不确定度预测模型。该模型表明，影响ADCP流量测验随机不确定度的参数可以分为三类：即ADCP系统性能参数、河流水力参数、测验作业参数。本文详细地分析了ADCP系统性能参数对流量测验随机误差的影响。本文提出的随机不确定度预测模型可以用于指导ADCP流量测验作业以保证测验精度满足要求。

Analysis of random error in ADCP flow discharge measurement I: Model for predicting random uncertainty HUANG He-ning

The random error in ADCP (Acoustic Doppler Current Profiler) flow discharge measurement induced by the random error in velocity measurement is analyzed. A model for predicting random uncertainty in measurement is proposed. The model considers the errors due to the velocities on the water surface and at the riverbed obtained from extrapolation, which are in the blind field of measurement, and the magnification effect on single ping standard deviation due to the boat movement. The model indicates that three types of parameters affect the ADCP discharge measurement random uncertainty: ADCP system parameters, river hydraulic parameters and field operation parameters. Detailed analysis on the effects of ADCP system parameters on discharge random errors is presented. The proposed model can be used to guide the measurement to meet the required measurement accuracy.