https://scholars.lib.ntu.edu.tw/handle/123456789/598471
標題: | Rapid Prediction of Vertical Deflections and Their Statistics for Surveying and Mapping Applications: Three Case Studies | 作者: | Soler T Han J.-Y. JEN-YU HAN |
關鍵字: | Deflections of the vertical (DoV);EGM2008 geoid model;General least squares;MATLAB;Stochastic models;Stochastic systems;Surveys;Case-studies;Engineering applications;Exact computations;Geoid heights;Geoid models;Least Square;Mapping applications;Vertical deflections;Deflection (structures);deflection;geoid;least squares method;mapping;prediction;software;statistical analysis;stochasticity;surveying | 公開日期: | 2021 | 卷: | 147 | 期: | 4 | 來源出版物: | Journal of Surveying Engineering | 摘要: | The accurate determination of deflections of the vertical is a complex scientific task that can be time-consuming and expensive. On occasion, good approximations are required for surveying and engineering applications. Although deflections of the vertical derived from geoid models are available online in certain regions, the exact computation procedure is not detailed and they generally are given without accompanying uncertainties. This work provides a simple, straightforward way, using least squares, to determine deflections of the vertical at geoid heights and their corresponding stochastic quantities, all based on undulations of the EGM2008 geoid model selected around the computation point. Three case studies were discussed, and an ancillary sample program is attached for completeness. ? 2021 American Society of Civil Engineers. |
URI: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-85114202008&doi=10.1061%2f%28ASCE%29SU.1943-5428.0000376&partnerID=40&md5=b5f6e01dca0a68a7a0eb549586c96c2f https://scholars.lib.ntu.edu.tw/handle/123456789/598471 |
ISSN: | 07339453 | DOI: | 10.1061/(ASCE)SU.1943-5428.0000376 |
顯示於: | 土木工程學系 |
在 IR 系統中的文件,除了特別指名其著作權條款之外,均受到著作權保護,並且保留所有的權利。