EFFICIENT LARGE-SCALE UNDERGROUND UTILITY MAPPING WITH A MULTI-CHANNEL GROUND-PENETRATING IMAGING RADAR SYSTEM

Ground-penetrating imaging radar (“GPiR”) combines standard GPR with accurate positioning and advanced signal processing to create three-dimensional (3D) images of the shallow subsurface. These images can reveal soil conditions and buried infrastructure. A commercial GPiR called the CART Imaging System was designed for mapping urban infrastructure. The CART system covers a 2m swath on the ground and can collect data while moving at speeds up to about 1km/h. The system collects enough data in a single pass to form a 3D image beneath its track; side-by-side passes are stitched together to create a seamless image of the subsurface