曲线拟合法在水深测量动吃水测定精度中的应用

The Application of Curve Fitting Method in the Accuracy of Dynamic Draft Measurement of Bathymetry

在水深测量过程中,测深仪换能器动吃水改正数测定精度将直接影响到水深测量成果的质量。本文采用水深测量过程中的GPS RTK数据来测定不同船速下的动吃水改正数,获得大量样本数据,并通过Matlab软件对样本数据进行曲线拟合。经测试,函数拟合效果良好,方法具备可行性。

In the process of bathymetric survey, the accuracy of dynamic draft correction number of transducer will directly affect the quality of bathymetric survey results. In this paper, GPS RTK Data in the process of bathymetry is used to measure the dynamic draft correction number under different ship speeds, and a large number of sample data are obtained, and the curve fitting of sample data is carried out by Matlab software. After testing, the function fitting effect is good and the method is feasible.