Abstract
An acoustic ray tracing model considering the real atmospheric acoustic attenuation is developed base on the equation of the acoustic local dispersion relation in the stratified atmosphere. The acoustic attenuation coefficient and growth factor in the moving atmosphere are deduced from the imaginary part of the dispersion relation, and the acoustic attenuation coefficient is corrected by using the theory of attenuation in the real atmosphere. The ray equations in the lossy atmosphere are obtained through Hamilton equations. The numerical study of this ray tracing model shows that the absorption of sound could have some influence to the acoustic trajectory. The influence could be neglected in the near field propagation but not in the far field.
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