A finite element based hybrid source-type scheme for Microwave Imaging

We present a novel imaging approach to tackle inverse scattering problems in non-canonical configurations. The approach relies on a hybrid formulation of the problem in terms of source-type integral equations, in which the non-canonical nature of the scenario is handled by means of the underlying finite element method framework. In particular, the adopted hybrid model mixes the contrast source formulation and the contrast source extended Born one, and takes advantage of their different (complementary) features. As shown by means of a preliminary numerical example, the proposed hybrid method is capable to achieve meaningful reconstruction in cases in which the same inversion algorithm (cast with respect to one of the two models) fails.