The asymptotic theory has been used to calculate the effect of the inner-scale size of the eddies on the properties of the irradiance variance and covariance of a plane wave propagating in a turbulent medium. It is found that the inclusion of a finite inner scale leads to an increase in the irradiance variance over what is predicted in the limit when the inner scale is zero. In addition, the inclusion of a finite inner scale alters the results for the spatial scales over which the irradiance scintillations are correlated. Finally, the results obtained are compared with recent predictions obtained by using the heuristic theory.
© 1983 Optical Society of AmericaPDF Article