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The Determination of Orthometric Height based on Gravity in Korea  

Lee, Yoo-Jung (서울시립대학교 대학원 공간정보공학과)
Choi, Yun-Soo (서울시립대학교공간정보공학과)
Kwon, Jay-Hyoun (서울시립대학교 공간정보공학과)
Lee, Ji-Sun (서울시립대학교 대학원 공간정보공학과)
Publication Information
Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography / v.28, no.1, 2010 , pp. 99-106 More about this Journal
Abstract
A vertical datum requires an origin, which is a point on the Earth's surface where the height of the point is a defined value(26.6871m). From this origin point, heights (height differences) can be measured to any other point using standard leveling and gravity measurement procedures. However, the leveling network over the Korea bas been established by using the normal gravity instead of the actual gravity values, and the heights for the points are published by National Geographic Information Institute (NGII). This may cause height for especially in the area where high-relief mountains are dominant. Therefore, the height errors caused by using normal gravity instead of actual gravity values are analyzed in this study. Then, the differences between the orthometric heights and the published heights, i.e., normal orthometric height are analyzed.
Keywords
Benchmark; Orthometric Height; Airborne gravity;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
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