A Phased Array Acoustic Wind Profiler for Remote Atmospheric Wind Measurement

Abstract

A phased array acoustic atmospheric wind profiler has been developed. The system has the capability to remotely measure atmospheric horizontal and vertical winds from 70 m to 770 m within the earth's atmospheric boundary layer. This system is being operated at the National Physical Laboratory (NPL), which is located in the middle of a highly noisy environment of the city of Delhi. Moreover, due to the rich green surroundings, there are plenty of birds whose calls make measurements at acoustic frequencies very difficult. In spite of the above two limitations, the system has been successfully used to make wind measurements in the height range of 70 m to 455 m.