Some observations on scattering by turbulent inhomogeneities

Several topics in the theory of radio wave scattering by dielectric inhomogeneities due to turbulence are discussed. A corrected derivation of the scattering formula is presented (which does not change the result), using the proper dyadic Green's function and examining the terms in the wave equation caused by the nonvanishing divergence of the scattered field. The statistics (distribution and correlation functions) of the received signal are considered. In particular, the significance of the space correlation function in testing some theoretical results is questioned. It is suggested that the frequency dependence of the time correlation function may give more information about the nature of the turbulence.