基于组合模型的高程拟合方法及精度分析  

Precision analysis of height fitting based on combined model

作　　者：王明孝[1] 张之孔[1] 

机构地区：[1]68029部队

出　　处：《测绘工程》2013年第2期1-4,共4页Engineering of Surveying and Mapping

摘　　要：文中介绍了加权二次曲面拟合和多面函数拟合的基本原理的分析、算法过程的推导。在此基础上,以两种高程拟合的误差平方和最小为约束,通过对两种拟合模型赋予不同的权重,形成新的组合模型。利用LINGO软件求解得到两种模型的权重,再进行高程拟合,在一定程度上进一步提高GPS高程拟合的精度和稳定性,具有一定的实践参考价值。It introduces the principle and algorithm of the derivation process about the weighted quadratic surface fitting and polyhedral function fitting method. On basis of this, the sum of squared error for the two height fittings are minimized while different weights are given for the two models to form a new fitting model. Then LINGO software is used to solve the weights in order to improve the GPS elevation fitting precision and stability to a certain extent, which has a certain practical reference value.

关 键 词：高程异常 加权二次曲面拟合 多面函数 组合模型 LINGO 

分 类 号：P228.4[天文地球—大地测量学与测量工程]