A drone-based wind measuring system for hot-air balloon competition pilots has been developed. The aim was to design a cost-effective, simple to use device that delivers accurate numbers for wind speed and wind direction. The sensor consists of high-resolution encoders for wind direction and wind speed, an inertial measurement unit (IMU) and a barometer. The measurements are stored on a SD-card or broadcasted to a base unit. The accuracy of the new system was validated with our high-precision OPTOkopter.
The wind measuring device is currently under test for ballooning competitions.
More information available here.