Korean Journal of Geomatics
- Volume 5 Issue 1
- /
- Pages.21-26
- /
- 2005
- /
- 1598-4699(pISSN)
Coordlinate Transformation Parameter Estimation for Korean Seas and Islands
- KWON Jay Hyoun (Department of geomatics, University of Seoul) ;
- BAE Tae-Suk (Department of Civil & Environmental Engineering & Geodetic Science, The Ohio State University) ;
- CHOI Yoon-Soo (Department of geomatics, University of Seoul)
- Published : 2005.12.01
Abstract
According to revisions of survey law taking effect on January 1, 2003, the Korean geodetic datum has been changed from a local geodetic to a world geodetic system. In this study, the datum transformation parameters especially for the maritime geographical data are determined. From database constructed through MGIS, a total of 492 coordinate pairs were selected and used in the parameter determination after outlier testing. Based on the parameter estimation, the Molodensky model is selected for datum transformation. For higher accuracy, Application of network optimization and a least squares collocation with Gaussian model has resulted in the accuracy better than 15 cm in coordinate transformation.