Figure 7 | Scientific Reports

Figure 7

From: High-Capacity Free-Space Optical Communications Between a Ground Transmitter and a Ground Receiver via a UAV Using Multiplexing of Multiple Orbital-Angular-Momentum Beams

Figure 7

Photos of the experimental setup. (a) Ground station; (b) UAV which carries the gimbal-mounted retro-reflector; (c) Communication link between the ground transmitter and the ground receiver via the UAV. (d) The fast steering mirror (FSM) and the position detector (PSD) of the fine tracking system. (e) The rotation stage, the goniometer and the mirror of the coarse tracking system.

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