Virtual multi-views method for through-wall radar imaging based on Green function

In this paper we utilize the multipath return to improve the image resolution and the signal-to-clutter ratio (SCR). Based on the modified indoor radio propagation model and the multipath scattering model, a method for localizing the focused multipath ghost is provided, then an algorithm combined the through-wall Green function with Back Propagation (BP) algorithm for association and mapping the multipath ghosts to their genuine targets is presented. The analysis is demonstrated with simulated data generated by GPRMAX.