ANGULAR-CORRELATION FUNCTION OF WAVE SCATTERING BY A RANDOM ROUGH-SURFACE AND DISCRETE SCATTERERS AND ITS APPLICATION IN THE DETECTION OF ABURIED OBJECT

The scattering of waves by a buried object is often obscured by the cl utter around it. Such clutter can be attributed to the scattering by r andom rough surfaces and random discrete scatterers. Recent studies sh ow that, because of the memory effect, the angular correlation functio n can suppress the effects of clutter and make the scattering by the b uried object more conspicuous. In this paper, we study the angular cor relation function of wave scattering by a buried object underneath a l ayer of random discrete scatterers and a non-Gaussian random rough sur face. Such problems are common when the target is buried below a rough surface that is underneath a layer of vegetation. Numerical results a re illustrated for various parameters of rough surfaces and discrete s catterers. The angular correlation function is calculated by frequency and angular averaging. It is shown that the use of the angular correl ation function can enhance target detection in the presence of clutter .