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    题名: USING SURFACE FITTING AND BUFFER ANALYSIS TO ESTIMATE REGIONAL GEOIDAL UNDULATION
    作者: 甯方璽
    NING, FANG-SHII
    贡献者: 地政系
    日期: 2015-07
    上传时间: 2015-11-02 15:13:10 (UTC+8)
    摘要: 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
    關聯: Boletim de Ciências Geodésicas,21,3
    数据类型: article
    显示于类别:[地政學系] 期刊論文

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