Abstract
This paper investigates the bistatic scattering from a surface that features randomly corrugated with irregular grooves. The total scattered field is decomposed into coherent and incoherent components to analyze their respective contributions. It was found that for randomly corrugated surfaces with irregular ridges or grooves, the coherent scattering is profound at several scattering angles with strong main lobes. Numerical simulation shows that the coherent lobe's angular shift away from specular direction is quasi-linearly dependent on the ridge density, suggesting that the coherent scattering pattern substantially contain the surface geometric information. It is expected our study offers deeper understanding of coherent imaging of rough surface and helps designing a novel imaging system for random targets.
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