LAUSR

Imaging of rough interfaces in a layered structure requires full understanding of the characteristics of their ground penetrating radar (GPR) echoes. In this study, a finite‐difference time‐domain computational model using a uniaxial perfectly matched layer boundary for GPR demining of layered rough interfaces is constructed. On the basis of this model, the numerical results of B‐scan echoes from two‐layered and three‐layered rough interfaces with different degrees of roughness are obtained and compared with the profiles of corresponding rough surfaces. These results and comparisons highlight the relationship between the B‐scan wave outlines and the profile of the layered rough interfaces. The effect of roughness of the interface on the B‐scan echoes are analyzed, and the influence of the upper rough surface profile on the shape of the B‐scan wave outline from the lower rough surface is discussed.