On the Solution of 2-D Inverse Scattering Problems via Source-Type Integral Equations

With reference to inverse scattering problems, two different integral equation models belonging to the class of source-type integral equations are reviewed, discussed, and properly compared. In particular, starting from the concept ofdegree of nonlinearityof the scattering problem,universal plotsand usefulconvenience mapsare derived and exploited to foresee which is the most convenient integral equation model to adopt for modeling the scattering phenomena at hand. Numerical examples, dealing with both synthetic and experimental data, are reported and discussed. The results fully confirm the theoretical analysis.