Frequency Spectrum of Optical Waves Propagating in a Moving Turbulent Atmosphere.

摘要

The authors have calculated the frequency spectrum of plane waves and beams propagating in a moving turbulent atmosphere. Both the case when the atmosphere moves with a constant wind and the case when the wind velocity is distributed according to a gaussian centered about some average velocity is considered. The results indicate that for small propagation distances,the frequency spectrum behaves as omega sup -8/3for large frequency,omega;for large propagation distances,the spectrum is broadened with increasing distance-with the broadening dependent upon the beam parameters and the wind velocity. (Author)