1. Satellite Systems Research Section, Electronics and Telecommunications Research Institute, Daejeon 305-700, Republic of Korea
2. Geostationary Satellite Operation Team, Korea Aerospace Research Institute, Daejeon 305-333, Republic of Korea
3. Satellite Planning Division, National Meteorological Satellite Center, Jincheon 365-830, Republic of Korea
4. Department of Aerospace Engineering, Sejong University, Seoul 143-747, Republic of Korea