The OPTOkopter has been developed for airborne, three-dimensional wind measurements and air quality monitoring. A high-precision, 3D wind sensor is carried by a drone that was built from scratch for this purpose. The drone was optimized for long flight times and precision flight. All wind measurements werde compared with the new wind lidar system of the Physikalisch-Technische Bundesanstalt (PTB), Germany's national metrology institute. The mean deviation of the measurements was shown to be below one percent.
A RTK-GPS allows for centimeter-level accurate, automatic flights. During the wind measurements, the geometry of the environment is captured on the fly (Simultaneous Anemometry and Mapping - SAM).
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