Abstract
We have been developing a radio acoustic sounding system (RASS) which is a combination of an acoustic transmitter and a pulse Doppler radar to detect the velocity of acoustic wavefronts. The purpose of the development is to provide an operational tool to observe wind and temperature profiles unattendedly and continuously. The data obtained with RASS are useful for the researches of atmospheric phenomena relating to local weather and pollutant transportation. RASS can measure the temperature inversion layer with an accuracy of less than 0.3 K which is almost comparable with those observed with radiosondes. The development of RASS is now at a stage of practical operational use. In this report, measurement techniques of RASS and their capabilities and applications are described.
