Monte Carlo simulations of surface clutter in GPR scenarios

The clutter caused by scattering from a rough air-ground interface is analyzed numerically. The simulations have been done using Monte Carlo approach. Statistical properties of the scattered field have been analyzed. It has been found that the phase of the reflected electromagnetic field nearby a rough air-ground interface follows the profile of the interface and this phase modulation of the reflected field is responsible for the forming of the clutter. Furthermore it is demonstrated that the correlation function of the phase of the reflected field coincides with the correlation function of the rough surface, while for the correlation of the reflected field it is valid only if the magnitude of the surface clutter is considerably less than the mean value of the ground reflection.