Abstract
The theory of sound propagation in a turbulent atmosphere near the impedance ground is presented. It is assumed that the monochromatic source and receiver are located above the ground, and there is no temperature or wind velocity stratification in the atmosphere. A formula for the mean square sound pressure at the receiver is obtained and studied analytically and numerically as a function of different parameters of a problem: the variance and integral length scale of atmospheric inhomogeneities, the horizontal distance between the source and receiver, the value of impedance of the ground, etc. Theoretical results obtained are also compared with data from laboratory experiment modeling sound propagation in an atmosphere with temperature fluctuations near the ground. The experiment was carried out at Ecole Centrale de Lyon. The agreement between theoretical and experimental results is generally good. [This material is based upon work supported in part by the U.S. Army Research Office under Contract No. DAAG55-98-1-0463, and NRC-ETL Research Associateship.] a)On leave from New Mexico State Univ.
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