SCATTERING FROM TIME-VARYING ROUGH SURFACES.
BELL TELEPHONE LABS INC WHIPPANY N J
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The fading of a monochromatic acoustic plane wave, reradiated by a moving, rough surface, is described using the far-zone spectral density of the reradiated pressure. This quantity is calculated using the method of physical optics, and specialized to the cases of slightly rough and very rough wind-generated seas, which are described by the Neumann-Pierson directional wave spectrum. The results show the dependence of the radiation spectrum upon wind speed, and the angles of incidence and observation relative to the wind direction. Author