Rewriting Scattering Equations for Faithful Inversion: the Degree of Non-Linearity of the Strong Permittivity Fluctuation model

In this contribution some considerations about the degree of non-linearity of the Strong Permittivity Fluctuation model is given in bidimensional geometries. Moreover, a comparison is performed with respect to the traditional TE scattering model. Quantifying the degree of nonlinearity represents a fundamental step in order to understand (and possibly overcome) some of the difficulties of inverse scattering problem as well as the validity of approximation- based solution methods.