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GPS Network Adjustment for Determining KGD2002 Coordinates of the $2^{nd}$ Order Geodetic Control Points  

Lee, Young-Jin (경일대학교 건설정보공학과)
Lee, Hyung-Kyu (창원대학교 토목공학과)
Jeong, Gwang-Ho (경일대학교 대학원)
Lee, Jun-Hyuk (경일대학교 대학원)
Publication Information
Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography / v.25, no.5, 2007 , pp. 451-463 More about this Journal
Abstract
This paper describes issues of GPS network adjustment to determine coordinate sets of the $2^{nd}$ order national geodetic control points based on the Korean Geodetic Datum (KGD2002) which has been newly adopted in 2003, After outlining theoretical background of the GPS network processing, the adjustment procedure applied for this project is detailed. Throughout performing a series of minimally constrained adjustments, some outliers have been removed and magnitude of absolute and relative error for a stochastic modeling has been determined as 4mm+0.4ppm and 8mm+0.8ppm in the horizontal and vertical component, respectively. The over constrained adjustment by fixing the $1^{st}$ order control points was performed to derive final solution, indicating that the accuracy of the estimated coordinates was 2cm and 4cm in the horizontal and vertical component.
Keywords
World geocentric datum; geodetic network adjustment; GPS network; $2^{nd}$ order point; official coordinate;
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