Multimonostatic shape reconstruction of dielectric cylinders by a linear inversion approach

In this paper the inverse problem of reconstructing the shape of dielectric cylinders by limited aspect multimonostatic scattering measurement is dealt with. The problem is formulated as a linear inverse one by means of the physical optics approximation distributional approach. The penetrability of the scatterers is taken into account by considering the contribution of the ldquoshadowedrdquo side to the local reflection coefficient. The adopted model allows to predict that both the illuminated and the shadowed sides of the scatterer provide contribution to the reconstructed image, but with a delocalization depending on the relative dielectric permittivity. Numerical results confirms this expectation and show the effectiveness of the approach.