1. Satellite System Division, Hanwha System, 304 Cheoin-gu, Yongin City 449-886, Republic of Korea
2. Department of Aerospace and Mechanical Engineering, Korea Aerospace University, Deogyang-gu, Goyang City 10540, Republic of Korea
3. STEP Lab. Ltd., Yuseong-gu, Daejeon City 34202, Republic of Korea