989136.fig.005a
(a)
989136.fig.005b
(b)
Figure 5: 1600 MHz migrated radar longitudinal section (a) and its line drawing (b) of the undamaged road section reported in Figure 3; different road layers (SBB: surface-binder-base; F: foundation; S: subgrade; B: bedrock) and buried underground network (UN) are drawn; the corresponding power diagram is reported in Figure 9.