悬沙的ADCP估测方法

Methods to measure and estimate suspended sediment using ADCP

ADCP估测悬沙含量是基于声波的背散射强度正比于悬沙浓度的理论。在实际测验中 ,由于多种因素干扰 ,ADCP所得到的背散射强度与悬沙浓度之间存在着不定的非线性关系。同传统的回归方法比较 ,BP网络模型方法可以使含沙估测精度有较大的提高。

The measurement and estimation of suspended sediment using ADCP is based on the theory that the strength of acoustic return signal is directly proportional to silt concentration in water.In actual surveys,due to many disturbing factors,the signal strength obtained from ADCPs is found to be in nonlinear relationships with suspended sediment concentration.Compared with conventional regression models,BP methods can greatly increase measuring accuracy.