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학술대회 Tracking Control for Free-Space Optical Communication of Unmanned Aerial Vehicle
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류지형, 김성창, 류정래, 이수영
International Conference on Communication and Information Systems (ICCIS) 2018, pp.132-136
18ZK1100, 호남권 지역산업 기반 ICT융합기술 고도화 지원사업, 이동수
The acquisition and tracking control strategy is addressed in this study for FSO (Free-Space Optical) communication between GCS (Ground Control Station) and UAV (Unmanned Aerial Vehicle) such as a drone. In comparison with the FSO communication system for a satellite, the UAV FSO system requires precise tracking control to cope with the fast changing rate of directional angle due to its short relative distance. Two modes of the control strategies are presented in this study: 1) From an initial state, GCS optical laser module is driven by PTU (Pan Tilt Unit) to acquire LOS (Line Of Sight) between the GCS and the UAV and 2) the optical module on the UAV is finely controlled to coincide its direction with the direction of GCS optical module. By using the computer simulation, the output value of the optical sensor is obtained in accordance with the incidence angle and the position of Gaussian laser beam onto the optical sensor. Based on the results of simulation, experiments are carried out to verify the proposed control strategies in this study.
KSP 제안 키워드
Communication system, Computer simulation(MC and MD), FSO communication, Free Space Optical Communication, Gaussian laser beam, Ground Control station, Laser module, Line-Of-Sight(LOS), Optical module, Optical sensors, Relative Distance