Research on the Post-Processing of Current Velocity Data
Ren Shao-hu · Ocean Technology · 2013
The layered current velocity data are analyzed in this paper, before proposing a complex exponential distribution model and a velocity-difference method, with the applicability analysis of the two methods conducted. The complex exponential model has a fixed functional form and five parameters, so the line has better flexibility, suitable for studying the distribution law of the vertical velocities of different currents. In contrast, the velocity-difference method doesn 't have a fixed function. This method studies the law of currents based on the fixed-point current values, and is suitable for the situation of multiple layers. Its applicability is related to the number of layers. When current has less layers, calculation on the velocities in unmeasured area fluctuates obviously, leading to notable distortion. Combined with ADCP, measured data are further processed, in order to reduce measurement errors and obtain more accurate current data.