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http://dx.doi.org/10.7848/ksgpc.2011.29.3.237

Improvement of GPS Relative Positioning Accuracy by Using Crustal Deformation Model in the Korean Peninsula  

Cho, Jae-Myoung (성균관대학교 건설환경시스템공학과)
Yun, Hong-Sik (성균관대학교 사회환경시스템공학과)
Lee, Mi-Ran (성균관대학교 건설환경시스템공학과)
Publication Information
Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography / v.29, no.3, 2011 , pp. 237-247 More about this Journal
Abstract
As of 2011, 72 Permanent GPS Stations are installed to control DGPS reference points by the National Geographic Information Institute in South Korea. As the center of the Earth's mass continues to move, the coordinates of the permanent GPS stations become inconsistent over time. Thus, a reference frame using a set of coordinates and their velocities of a global network of stations at a specific period has been used to solve the inconsistency. However, the relative movement of the permanent GPS stations can lower the accuracy of GPS relative positioning. In this research, we first analyzed the data collected daily during the past 30 months at the 40 permanent GPS stations within South Korea and the 5 IGS permanent GPS stations around the Korean Peninsula using a global network adjustment. We then calculated the absolute and relative amount of movement of the GPS permanent stations. We also identified the optimum renewal period of the permanent GPS stations considering the accuracy of relative GPS surveying. Finally, we developed a Korean a Korean crustal movement model that can be used to improvement of accuracy.
Keywords
Permanent GPS Station; Crustal Deformation Model; Precise Baseline Analysis; GPS Relative Positioning;
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