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Calaulation of Geometric Geoidal Heights Using Gps/leveling Data in Study Area  

이석배 (진주산업대학교 토목공학과)
황용진 (진주산업대학교 토목공학과)
이재원 (대한측량협회 측량정보기술연구원)
Publication Information
Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography / v.22, no.1, 2004 , pp. 45-52 More about this Journal
Abstract
It can be classified in various methods to get the geoidal heights. It can be achieved geometric geoidal heights if we do GPS surveying in leveling point. The aims of this paper are calculation of geometric geoidal heights using GPS/leveling data in study area and evaluation of the global and local geoid models in and around Korean peninsula. For this study, study area was selected in the leveling line from Kunsan to Chonju city and GPS surveying was accomplished in the leveling line. And, also spherical harmonic analysis was made on the three global geopotential models, OSU91A, EGM96, EGM96m under same condition. Then the differences were calculated between geometric geoidal heights and geoidal heights of 3 geopotential models, KOGD2002 which was Korean gravimetric geoid model. The results shows that EGM96m is the best model because the differences between geoidal heights of E6M96m and geometric geoidal heights of GPS/Leveling data appear the smallest value among them.
Keywords
Geoidal heights; GPS/Leveling; Bench Mark; Global geopotential model;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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