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Abstract
Numerical results are presented of double-scatter Kirchhoff calculations for the scattering of light from randomly rough surfaces with the source and detector at finite distances. The surfaces considered are one-dimensional perfectly conducting surfaces and shadowing is included explicitly in the calculations. For the case of the source and detector at the same distance, the scattered intensity distribution is insensitive to the value of this distance except when it is of the order of the surface size. In that case the intensity distribution changes but the backscatter enhancement factor stays constant. For the source and detector at different distances, the backscatter enhancement is less than the enhancement for the case of the source and detector at the same distance.