Douglas M. Photiadis
Naval Res. Lab., Washington, DC 20375-5000
The scattering cross section of elastic structures is modified in a
nontrivial fashion by the presence of effectively random internal structure. The
locus of the highlights in frequency-angle space can often be modeled reasonably
by considering the behavior of the associated average structure, but the
influence of the internal structure on the levels of the scattering cross
section cannot be determined in this way. In terms of the development of
effective scattering models, the mean Green's function does not contain enough
information in this context and higher-order averages are required, at a minimum
the mean intensity