A study of scattering from an object below a rough surface

The prediction of scattering from an object located beneath a rough interface is a subject of recent interest, particularly due to applications in the detection of sub-surface objects with radar systems. In this paper, a numerical study of scattering from a three dimensional penetrable object located below a lossy dielectric rough interface is performed A generalized example problem is considered to provide an illustration of some of the coherent and incoherent scattering effects which can occur, and to investigate the performance of some simple approximations for these quantities. A Monte Carlo simulation is used to obtain scattered field statistics as a function of frequency from 2.2 to 5 GHz, and results are illustrated in both the frequency and time domains to clarify the scattering physics.