1. Department of Aerospace Engineering and Convergence Engineering for Intelligent Drone, Sejong University, Seoul, Republic of Korea
2. Satellite Navigation Research Section, Electronics Telecommunications Research Institute, Daejeon, Republic of Korea
3. Unmanned Vehicle Research Section, Electronics Telecommunications Research Institute (ETRI), Daejeon, Republic of Korea
4. School of Integrated Technology, Yonsei University, Incheon, Republic of Korea