7-매개변수 좌표변환에 의한 우리나라 측지계와 WGS-84의 좌표변환

Coordinate Transformation between Koran Geodetic System and WGS-84 by 7 Parameter Coordinate Transformation Method

본 연구는 GPS 위성측량의 기준좌표계로 채택된 세계측지계(WGS-84)와 현재 우리나라에서 사용되고 있는 베셀타원체에 근거한 측지계와 조표변환을 위하여 Bursa-Wolf모델, Molodensky-Badekas 모델과 Veis모델의 3가지 7-매개변수 좌표변환 방법을 수행하고 좌표변환 정밀도를 비교하였다. 본 연구의결과, 우리나라에서는 Bursa-Wolf모델이 7-매개변수 결정모델로 적합하다는 것을 알 수 있었다.

The main purpose of the present study was to investigate coordinate transformation based on two different sys-tems: one was the World Geodetic System 1984(WGS84) adopted as a reference system for GPS satellite surveying; and another was the current Korean geodetic system based on Bessel ellipsoid. for this purpose, three methods were used to determine 7 parameters as follows: Bursa-Wolf model, Molodensky-Badekas model, and Veis model. The coordinate transformation was carried out using simillity transformation applied the obtained 7 parameters and the precision of transformed coordinate was evaluated. From this results, we found that Bursa-Wolf model is more suitable than others for the determination of transformation parameters in Korea.