The invention relates to a wind farm aircraft beacon system and a wind farm (112) having such a wind park aircraft beacon system as well as to a method for providing a wind farm (112) with a beacon. For this purpose, the invention comprises a plurality of aircraft beacon devices (30) as well as at least one camera (20) for receiving images and an evaluation device (24) for detecting object positions in flight. The evaluation device (24) detects object positions in flight by evaluating camera data, in particular recorded images. the wind farm aircraft beacon system also comprises a switching device (28) for switching on or off at least one of the aircraft beacon devices (30) depending on the object positions in flight detected by the evaluating device (24) .
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