多面函数法在建立区域潮汐模型中的应用

基于卫星测高数据的特点,提出利用多面函数建立区域潮汐场模型的方法。详细论述了多面函数模型的基本原理及方程,并与Kriging法、距离加权法拟合结果进行了比较。结果表明,多面函数模型拟合精度较高,可以用于测高潮汐数据拟合,并成功应用于南中国海域主潮波模型的建立。在大量数据试验基础上,解决了应用多面函数进行潮汐参数拟合计算中核函数的合理选取及平滑因子的匹配等问题。

The Application of the Hardy Function in the Creation of Regional Tidal Model

Based on the character of the satellite altimetry data,this paper puts forward the method of creating regional tidal model through the Hardy Function method.Compared with the Kriging method and weighted distance method,this paper elaborates on the principle and basic equation of the Hardy Function.Results show that the Hardy Function model is high in fitting accuracy,can be used to fit altimetry tidal data and is successfully applied in the creation of main tidal model of south sea region of China.Based on large amount of experimental data,this paper solves the problem of the selection of core function and the matching of smoothing factor in the fitting of tide coefficient using Hardy Function method.