Absolute and relative testing of gravimetric geoid models using Global Positioning System and orthometric height data

被引：47
|
作者：
Featherstone, WE [1 ]
机构：
[1] Curtin Univ Technol, Dept Spatial Sci, Perth, WA 6845, Australia
来源：
COMPUTERS & GEOSCIENCES | 2001年 / 27卷 / 07期
基金：
澳大利亚研究理事会;
关键词：
geoid; geodesy; GPS; spirit levelling; height; Australia;
D O I：
10.1016/S0098-3004(00)00169-2
中图分类号：
TP39 [计算机的应用];
学科分类号：
081203 ; 0835 ;
摘要：
The verification of gravimetric geoid models on land is presented using co-located Global Positioning System (GPS) and orthometric heights. This is undertaken in an absolute sense, which also constrains the zero-degree term in the geoid, and in a relative sense, which indicates the appropriateness of the gravimetric geoid model for transforming GPS-derived ellipsoidal heights to the local vertical datum. Two computer programs are presented for these purposes, which can also be used for comparing other types of discrete and gridded data. A case study is used to illustrate the use of these approaches and software to validate gravimetric geoid models in Western Australia. (C) 2001 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码：807 / 814
页数：8
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