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.
出处
《测绘工程》
CSCD
2013年第2期1-4,共4页
Engineering of Surveying and Mapping
关键词
高程异常
加权二次曲面拟合
多面函数
组合模型
LINGO
height anomaly
weighted quadratic surface fitting
polyhedral function
combined model
LINCAD
