Author(s)

K.M. Li & S. Taherzadeh

Abstract

A new method is suggested for the evaluation of sound field in a moving stratified atmosphere above an absorbing ground. The new method stems from a recent development on a high-frequency approximation of sound propagation outdoors in the presence of wind and temperature gradients[K M Li, J. Acoust. Soc. Am. 95, 1840-1852]. The present work attempts to implement the new method numerically with vertical variations in temperature and vectorial wind velocity as input parameters. Although the algorithm is applied to atmospheric sound propagation, the general idea can be applied to other branches of wave propagation such as the transmission of sound in an ocean environment. The determination of the ray path is simplified by the introduction of an apparent index of refraction that has included the Doppler effect due to the motio

Keywords