Field Fluctuations in a Random Continuum Containing a Spherical Object Inclusion

Abstract

For planewave propagation in a random continuum, the changes in mean-square amplitude and phase variations are derived due to the presence in the medium of a large spherical object arbitrary in density and refractive index, and positioned on the transmitter-to-receiver line-of-sight. The random continuum is taken as statistically homogeneous and isotropic in space with weak, large-scale refractive-index variations representable by a Gaussian autocorrelation function. Calculations are performed for far-field observation of the forward-scattered fluctuating signal.