多面函数法拟合GPS高程及其程序实现  

Fitting GPS Elevation with Multi-surface Function and Its Program Implementation

作　　者：黄书华[1,2] Huang Shuhua(Chengdu Institute of Survey and Investigation,Chengdu 610081,China;Sichuan City Informatization Surveying and Mapping Engineering Technology Research Center,Chengdu 610081,China)

机构地区：[1]成都市勘察测绘研究院,四川成都610081 [2]四川省城市信息化测绘工程技术研究中心,四川成都610081

出　　处：《城市勘测》2022年第1期84-86,共3页Urban Geotechnical Investigation & Surveying

摘　　要：在简要分析多面函数拟合原理的基础上,介绍了采用多面函数法拟合GPS高程的步骤及方法。使用C#语言编制了多面函数法拟合GPS高程的程序,该程序可对比分析选取不同核函数及光滑因子对拟合结果的影响。通过反复试验建议选取均匀分布中心点,采用正双曲线函数与不同光滑因子进行配对调整以达到最佳拟合效果。Based on brief analysis the principles of muti-surface function,introduced the steps and methods of using the multi-surface function fitting GPS elevation.Using C#developed a program which can fitting GPS elevation by multi-surface function,the program can comparison the effects of different kernel functions and smoothing factors.Through repeated experiments,it is recommended to select evenly distributed center points,and use positive hyperbolic functions to pair and adjust with different smoothing factors to achieve the best fitting effect.

关 键 词：多面函数 GPS 高程拟合 核函数 光滑因子 

分 类 号：P228[天文地球—大地测量学与测量工程]