The mutual coherence function in a scattering channel-A two scale Solution

By using the two-scale embedding procedure, an approximate expression for the mutual coherence function in a refractive and scattering channel is derived. The solution reduces to the known limiting monochromatic solutions, and provides a good approximation for the bichromatic coherence in a homogeneous scattering medium. Simple expressions are derived for both the coherence bandwidth and coherence time (Doppler spreading) in a quadratic channel with a quadratic scatterer. The possibility of inversion is explored.