control points. We improved our previous research for DEM 
matching of pushbroom images: the feasibility of automatic 
absolute orientation and the use of the DTED dataset at 90m 
spacing was demonstrated. 
We showed that the DEM matching could establish absolute 
models of high resolution satellite image without ground 
control points. In particular, the applicability of 90m existing 
global elevation data is very encouraging. We look forward to 
contributing to understanding of DEM matching for linear 
pushbroom images and of solution to precise mapping without 
ground control points. 
ACKNOWLEDGEMENTS 
This work was supported in part by Basic Science Research 
Program through the National Research Foundation of Korea 
funded by the Ministry of Education, Science and Technology 
(2011-0009721) and by the supporting project to educate GIS 
experts funded by the Ministry of Land, Transport and Maritime 
Affairs of the Government of Korea. 
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