Air velocity versus wind velocity measuring device for flight body, and its measuring method

摘要

Problem to be solved: to provide an apparatus and a method capable of measuring air velocity and wind direction with high resolution suitable for a flying body such as a small UAV flying at low speed.A method for measuring airspeed and wind direction for air bodiesA first wind speed measuring means 1 having a pair of ultrasonic transceivers disposed at intervals of a distance L in a first direction;A second wind velocity measuring means 2 having a pair of ultrasonic transceivers arranged at a distance L in the second direction and a wind direction measuring means 3 for measuring the wind direction based on the measured first and second wind speeds are provided.First and second wind velocity measuring means2Phase difference correction means 17 which corrects the phase difference computed by the phase difference method based on the time difference wind velocity calculated by the time difference method.27 is provided.Diagram