An inverse scattering method for lossy objects using time-reversed fields

摘要

A time-domain inverse scattering approach using time-reversed fields for reconstructing electrical parameters of cylindrical objects based on gradient method is proposed. The approach does not require the explicit knowledge of incident fields illuminating the object and the time-reversed fields are calculated by time-reversing the equivalent current sources determined by the total fields recorded on a measurement line. This gradient based inverse approach can deal with a reconstruction of lossy object. Numerical simulations are carried out to show the effectiveness of the proposed method.