Abstract

This chapter discusses a system approach of wave propagation in random media. The chapter presents the review of the properties of electromagnetic wave propagation in a random medium in the limit when the random spatial inhomogeneities in the medium are large in comparison with the wavelength of the radiation and the magnitude of the index of refraction fluctuations (produced by these random inhomogeneities) is small in comparison with unity. It is also being assumed that the electromagnetic field is sufficiently weak, so, non-linear effects can be ignored, and that the propagation path is not so long that there is a saturation of the scintillations. The treatment begins with the vector form of the Maxwell wave equation, which is used to derive a generalized version of the Huygens-Fresnel Principle. This serves as the basis of all of the important results to be obtained.

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