Figure 6

3D reconstruction of a plastic antipersonnel mine obtained by applying the two-step migration algorithm to real laboratory data. The mine is buried 10 cm below the surface of a sand box. The frequency range is from 2 to 6 GHz; the TX-RX distance is 14 cm; the antenna is moved 13 cm above the soil. The 3D reconstruction is a 3D contour of a selected amplitude of the migrated signal that emphasizes the energy reflected by the sand surface and the energy scattered by the mine.