The influence of aperture averaging on the two-frequency correlation of a beam that propagates in a weakly turbulent atmosphere is considered. A computational scheme to derive closed expressions for the aperture-averaged two-frequency log amplitude and phase correlation functions is presented. An application of the resulting expressions to a level-crossing problem is illustrated.
© 1984 Optical Society of America
M. Tamir, E. Azoulay, S. Tsur, and U. Halavee, "Aperture-averaged spectral correlations of beams in a turbulent atmosphere," Appl. Opt. 23, 2359-2362 (1984)