Analysis of the field diffracted by a cylinder with a perforated coating

The direct and inverse problems of plane wave diffraction by a circular cylinder with a perforated coating are investigated. In the context of the direct problem, it is shown that a coated cylinder causes a more intense diffraction field than that produced by a smooth cylinder. In the context of the inverse problem, the parameters of the perforated coating are chosen so as to ensure a given level of suppression for the field diffracted by the cylinder.