超音波による風速の一測定法
1973 年 21 巻 234 号 p. 401-406
詳細
1973 年 21 巻 234 号 p. 401-406
In this paper, a method to measure the wind velocity by ultrasonic techniques is presented. The principle used is as follows: Since the ultrasonic beam is deflected by wind, the uniform wind velocity can be measured by the change of received acoustic pressure. When the continuous wave is used, the relation between the received acoustic pressure and the wind velocity is determined through the directivity characteristics of ultrasonic transmitter and receiver, and the effects of wind direction and so forth are also investigated. The agreement between the theoretical values and the experimental results is considered to be extremely good.
