TWO-WAY WIRELESS OPTICAL COMMUNICATION CHANNEL SYSTEM WITH UNMANNED AIRCRAFT Russian patent published in 2025 - IPC H04B10/11 

FIELD: communication technique.

SUBSTANCE: invention relates to wireless optical communication channels in the infrared range and can be used in two-way communication systems between stationary objects and unmanned aerial vehicles (UAVs), as well as other mobile objects. Thus, to create a UAV control channel using atmospheric optical communication, it is necessary to solve two tasks: tracking the position of the UAV (optical axis of the channel) in a certain sector of the celestial sphere and controlling the optical balance in case of change in the weather or coordinates. Invention proposes to solve these tasks by estimating the position of the projection from the cone of light on the photomatrix (PM) of a stationary station. Algorithm is proposed: 1) restoring the contour and diagonals of the ellipse using computer vision and an artificial neural network; 2) calculation, using the projective geometry of the UAV spatial coordinates based on the measured coordinates (x, y) of the ellipse three points (pixels) on the PM; 3) similar calculation of coordinates of UAV based on equation of optical balance and measured signal power in pixels of three points of PM; 4) error calculation in the UAV coordinates values calculated by the geometrical method and using the optical balance (under the condition of known: the divergence angles and the transmitter power), and its use for the lasers power adjustment; 5) formation of an uplink using a special hemisphere of optical fibres of the photonic-crystal fibre, based on the calculated spatial angle of the optical axis of the UAV. Disclosed method of setting up an atmospheric optical channel describes one of the possible embodiments of the optical analogue of a phased antenna array.

EFFECT: development of stable and reliable high-speed information transmission channels from UAV for solving complex tasks of monitoring and control.

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