Abstract Acoustic Doppler current profilers (ADCPs) are commonly used instruments for measurement of natural streamflow and flow in manmade channels. Velocities measured in a profile by the instrument are used to estimate the discharge in a channel. A Teledyne RD Instruments StreamPro ADCP was used to measure the mean velocity simultaneously with a laser Doppler anemometer (LDA) in a laboratory flume. An average of 3.9% under-prediction of the mean velocity measured by the ADCP occurred when compared to the measurements of the LDA. Moreover, this study shows that the sampling duration of the measurements significantly impacts the mean point velocities measured by up to 50%.

中文翻译：

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浅层流中声学多普勒电流剖面仪平均速度测量的分析

摘要 声学多普勒电流剖面仪 (ADCP) 是测量天然水流和人造河道流量的常用仪器。仪器在剖面中测量的速度用于估计通道中的流量。Teledyne RD Instruments StreamPro ADCP 用于在实验室水槽中与激光多普勒风速计 (LDA) 同时测量平均速度。与 LDA 的测量值相比，ADCP 测量的平均速度平均低 3.9%。此外，这项研究表明，测量的采样持续时间显着影响测量的平均点速度高达 50%。