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政大機構典藏 > 社會科學學院 > 地政學系 > 期刊論文 > Item 140.119/79271

Please use this identifier to cite or link to this item: https://nccur.lib.nccu.edu.tw/handle/140.119/79271

Title:	USING SURFACE FITTING AND BUFFER ANALYSIS TO ESTIMATE REGIONAL GEOIDAL UNDULATION
Authors:	甯方璽 NING, FANG-SHII
Contributors:	地政系
Date:	2015-07
Issue Date:	2015-11-02 15:13:10 (UTC+8)
Abstract:	Geoidal undulation is the distance from the surface of an ellipsoid to the surface of a geoid measured along a line that is perpendicular to the ellipsoid. This paper describes how the geoidal undulation can be derived from the orthometric height, Global Navigation Satellite System geodetic height, and a surface model. Various surfaces fitting using the plane coordinates of the reference points and analysis with different buffers were used to determine the geoid undulation Taiwan. The results show that the quadratic surface model outperformed other surface models, yielding a buffer radius ranging from 15 to 25 km. According to the results, the accuracy of regional geoid undulation (city or state) can be improved through this process of surface fitting
Relation:	Boletim de Ciências Geodésicas,21,3
Data Type:	article
Appears in Collections:	[地政學系] 期刊論文

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