Line-of-site wave propagation in a randomly inhomogeneous medium

Theoretical calculations have been made, using the single-scattering approximation, for propagation in a randomly inhomogeneous medium in which the deviations of refractive index from the mean are small. The statistical quantities considered were the variance, correlation function, and power spectrum for the phase and relative amplitude of the field at a point and their differences at two points. The emphasis in this paper is in indicating the transition from the ray treatment results to the scattering cross section results. The correlation function for the refractive index is taken to be time as well as space dependent so that the power spectrum can be computed from the original formulation.