The beam of BirdScan MR1 radars performs rotational scanning of the surveyed volume. Thereby the horizontal position of targets can be calculated and, for moving targets such as birds and bats, the flight direction and speed can be estimated.
Flight direction and speed is estimated and stored in real-time by BirdScan’s processing module. The functioning is schematically illustrated on the picture: rotational scanning indicated with green arrow, flight path of two birds represented as red arrows.
Direction and speed information is available at the level of individual echos and this sets the basis for versatile and relevant analyses. In this example, the flight direction and average speed of birds was calculated and plotted for 4 consecutive days (yellow) and nights (blue). It shows a clear pattern of South-West oriented migration.
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