多项式插值法在水位推测中的应用  

Application of Polynomial Interpolation in Water Level Estimation

作　　者：王朝[1] 郭志勇 Wang Chao;Guo Zhiyong(CCCC First Harbor Consultants Co.,Ltd.,Tianjin 300222,China)

机构地区：[1]中交第一航务工程勘察设计院有限公司,天津300222

出　　处：《港工技术》2021年第1期114-117,共4页Port Engineering Technology

摘　　要：本文介绍了多项式加权平均内插法的原理和计算推导,使用多项式加权平均法和二次抛物线拟合法对水位数据进行推算,并使用拉伊达准则和肖维勒准则对推算的结果进行判断。统计结果数据表明多项式插值法和二次抛物线拟合法适用于水位推算,并能取得较好的成果。The principle and computational derivation of polynomial weighted average interpolation method are introduced.The polynomial weighted average method is combined with quadratic parabolic fitting method to calculate the water level,and the calculation results are judged by using Laida criterion and Schawler criterion.The statistical results show that the polynomial interpolation method and the quadratic parabola fitting method are suitable for water level estimation,and better results can be obtained.

关 键 词：二次抛物线拟合法 多项式插值法 水位推测 水位异常 

分 类 号：P229.5[天文地球—大地测量学与测量工程]