The development of a new mathematical ionospheric-delay model in low latitude region

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The development of a new mathematical ionospheric-delay model in low latitude region

 

Author: Hu, Ting
Title: The development of a new mathematical ionospheric-delay model in low latitude region
Degree: M.Sc.
Year: 2012
Subject: Global Positioning System.
Ionosphere.
Electrons -- Measurement.
Ionospheric electron density.
Hong Kong Polytechnic University -- Dissertations
Department: Dept. of Land Surveying and Geo-Informatics
Pages: xiii, 99 leaves : ill. ; 30 cm.
Language: English
InnoPac Record: http://library.polyu.edu.hk/record=b2598736
URI: http://theses.lib.polyu.edu.hk/handle/200/6940
Abstract: Reducing errors to improve the accuracy of satellite positioning is one of the most important parts in GPS researches and applications. After the SA policy is switched off, the error caused by ionosphere has become one of the largest error sources which influence the accuracy of GPS precise positioning. This paper briefly introduces the theory and methods of monitoring the TEC (total electron content) based on ground-based dual-frequency GPS receivers, analyzes the basic principle and difference of establishing VTEC Ionospheric model. A new mathematical ionospheric delay model which best fits for the low latitude region is established. And the accuracy, stability and predictability of this model have been analyzed in this study. The results show that the new ionospheric delay model can precisely fit and predict the total electron content in Hong Kong area.

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