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利用重力场模型和局部重力资料计算GPS水准高的精度探讨
引用本文:黄建业,谢军.利用重力场模型和局部重力资料计算GPS水准高的精度探讨[J].测绘工程,2001,10(4):27-29.
作者姓名:黄建业  谢军
作者单位:同济大学测量与国土信息工程系,上海,200092
摘    要:利用大地水准面高,结合GPS测量的高程信息,直接计算GPS水准高,是一种全新诱人的解决方案。本文就这种方案,根据其核心技术-大地水面高的性质:长波长-全球重力场;中波长-局部重力资料,短波长-数据地形,对它的具体实现,适用范围以及精度分析作了详尽的探讨,在此基础上,提出一些GPS水准应用规范和要求,并利用实验数据对其进行验证。

关 键 词:大地水准面高  GPS水准高  重力场模型  重力异常  DEM地表模型
文章编号:1006-7949(2001)04-0027-03
修稿时间:2001年5月20日

An Approach to the Precision of Computing the GPS Levelling Heights Using Gravity Field and Local Gravity Data
HUANG Jian-ye,XIE Jun.An Approach to the Precision of Computing the GPS Levelling Heights Using Gravity Field and Local Gravity Data[J].Engineering of Surveying and Mapping,2001,10(4):27-29.
Authors:HUANG Jian-ye  XIE Jun
Abstract:Directly computing the GPS Levelling heights using the geoid heights and GPS height infor- mation is a wholly new and charming solution. Based on the key technique of this solution, the proper- ties of the geoid heights (including long wave length-global gravity field, medium wavelength -local gravity data and short wavelength data topography), the paper discusses in detail the actualization, appli- cation scope and precision analysis of the method. On the basis of that, some applied specifications and requirements for the GPS levelling are put forward, and testing and verifying are carried out with the experiental data.
Keywords:Geoid height  GPS levelling height  Gravity field model  Gravity anomyly  DEM topographic model
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