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Abstract
Acoustic radar is used for the measurements of meteorological parameters, viz. temperature and wind-velocity in the lower atmosphere.
A colocated acoustic sounder system using a reflector horn acoustic transducer as the receiving antenna and a square array as the transmitting antenna was set up. Four watts of acoustic power was directed as a narrow beam vertically upwards in the lower atmosphere and scattered signals were displayed in the form of facsimile records which depict the thermal structure of the lower atmosphere. The typical results obtained by this system are presented and their salient features discussed.