Kirchhoff Migration Method for Tube Detection with UWB GPR

The problem of subsurface object depth determination is solved by the ultrawideband ground penetrating radar simulation and Kirchhoff migration method. The electromagnetic problem is calculated by the FDTD method. The source of electromagnetic field is a plane electromagnetic wave of nanosecond time duration with normal incidence to the ground plane. A-scans are obtained by measuring the reflected electromagnetic field at the certain height above the air-ground interface. The resulting scattered fields in the form of B-scans are processed by Kirchhoff migration method in order to determine the exact depth of the hidden object.