Preliminary assessment of a contrast source formulation for the iterative multiscale reconstruction of cylindrical objects in electromagnetic imaging

In nonlinear inverse scattering problems, induced contrast sources are often used to model the response of the scatterers under test to the interrogating incident field. They then constitute, together with the contrast function (which includes the parameters of interest of the object under test) the problem unknowns. In this paper, an approach to electromagnetic imaging is developed which is based on a contrast source integral equation. Dielectric cylinders with arbitrary shapes are inspected under multi-illumination multiview conditions. The results of some numerical simulations are reported in order to preliminarily evaluate the capabilities and limitations of the proposed inspection method.