文章基本信息

标题：Towards a real time leveling using the VRS GPS network in Jeddah
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作者：Ahmed El-hattab ; Ashraf Mousa
期刊名称：NRIAG Journal of Astronomy and Geophysics
印刷版ISSN：2090-9977
电子版ISSN：2090-9985
出版年度：2013
卷号：2
期号：2
页码：243-249
DOI：10.1016/j.nrjag.2013.07.001
语种：English
出版社：Elsevier
摘要：AbstractJeddah Municipality (JM) established a Virtual Reference Stations (VRS) GPS network for different survey applications. JM provides the users with VRS service to enable them to reach a real time cm-accuracy of horizontal position with single GPS receiver.To achieve high accuracy for GPS leveling applications a precise geoid model must be defined and applied with the GPS measurements. One of the methods that are used for developing a local geoid model is enhancing a Global Geopotential Model (GGM) with a comprehensive set of gravity, GPS, and leveling measurements.This paper evaluates six of the recent GGMs with measured GPS and leveling data in Jeddah to select the best model to be used with VRS GPS. That model will be the first candidate to develop a local geoid model for Jeddah. The results indicate that the GO-CONS-GCF-2-TIM-R1 model is the best available model which gives the minimum standard deviation of geoidal height difference.
关键词：KeywordsJeddah MunicipalityGPSVirtual Reference StationsLocal geoid model