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http://dx.doi.org/10.7848/ksgpc.2011.29.1.1

3D Geopositioning Accuracy Assessment Using KOMPSAT-2 RPC  

Oh, Kwan-Young (서울시립대학교 공간정보공학과)
Jung, Hyung-Sup (서울시립대학교 공간정보공학과)
Lee, Won-Jin (서울시립대학교 공간정보공학과)
Lee, Dong-Taek (서울시립대학교 공간정보공학과)
Publication Information
Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography / v.29, no.1, 2011 , pp. 1-9 More about this Journal
Abstract
The objective of this paper is to improve the accuracy of the 3D geopositioning extracted from Rational Polynomial Coefficient(RPC) provide in the KOMPSAT-2 metadata files. In this paper, we developed the algorithm to adjust a RFM(Rational Functional Model), and could improve the accuracy of a RFM with this algorithm. Furthermore, when a RFM was adjusted with this algorithm, the effects of the number of GCPs on the accuracy of the adjusted RFM was tested. For accuracy assessment using adjusted RFM, 9 ground control points(GCPs) and 24 check points could be used. Results indicated that the root mean squared errors(RMSEs) of horizontal residual errors calculated 24 check points were 2.20(m). The achieved accuracy of three dimensional object-point determination was 1.72(m) in the X-dimension and 1.37(m) in the Y-dimension and 2.20(m) in the Z-dimension.
Keywords
KOMPSAT-2; RPC; 3D geopositioning;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
연도 인용수 순위
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