Abstract
Measured scattering coefficients are presented for four randomly rough, pressure-release surfaces which are statistically related. The scattering data were collected at frequencies of 100, 200, and 500 kHz for forward, specular, and backscattering geometries. The ratios of acoustic wavelength to surface rms height (λ/h) range from 0.33 to 6.5. The most obvious features of the data are the increasing diffuseness of the scattered energy with increasing roughness, and the substantially frequency independent behavior of the scattering coefficients.
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