Numerical solution to three-dimensional inverse scattering for dielectric reconstruction purposes

摘要: The possibility of reconstructing the distribution dielectric characteristics unknown inhomogeneous objects contained inside a fixed investigation volume V, where scatterers can be placed at arbitrary positions is considered. It assumed that localisation and determination their surface shapes accomplished through reconstruction equivalent current density, following previously proposed approach. method based on an inverse-scattering formulation, makes use moment method, together with pseudoinversion algorithm, to face problems associated ill-conditioning. approach does not require any plane-wave illumination or first-order approximations. potentially used even in case strong scatterers. advantages using suitable thresholds for density capabilities limitations have been assessed by means numerical computer simulations, which data strongly affected Gaussian noise used.