구면적과 투영면적의 비교 및 세계측지계 전환에 따른 면적변화량 분석

초록

A continuous geodetic reference system has been requested in positioning in the world because of big use of GNSS including GPS, GLONASS, Galileo etc. Many countries as like Korea, japan, US and Europe have been changed their geodetic reference system from local to global. In this study, the difference between spherical area and projected area was computed in Korea. And area variation caused by change from local geodetic reference system to world geodetic reference system was computed in both spherical surface and projected plane. The results shows that projected area of study area is bigger by 0.6915% than spherical area in local system and projected area is bigger by 0.6799% than spherical area in global system. Also, we can see that the projected area in Korea is enlarged 11.161㎢ and the area in Korean peninsula is enlarged 24.909㎢.

키워드