An integral representation for the field of the wave propagating in a medium with random inhomogeneities of different scales

New method for wave propagation description in multi-scale random media is suggested. The method uses double Fourier transform of the observed wave field both in coordinates of receivers and those of the moving source (satellite). It is shown, that the suggested approach is consistent with known partial solutions: geometrical optics method and Born approximation in areas of their applicability. The method under consideration is valid in the case of strong fluctuation, caused by large-scale focusing inhomogeneities and in the same time describes backscattering effects, characteristic for wave propagation in small-scale random media.