Abstract
For sediment interfaces that are very rough on the scale of the acoustic wavelength (i.e., kh greater than 1 where k is 2*π/wavelength and h is the rms roughness of the water/sediment interface) it is possible to estimate what the reflection coefficient would be if the interface were flat. In order to do so, a large ensemble of forward scattering measurements are needed in order to reduce the statistical uncertainty of the estimated reflection coefficient. In addition to the statistical uncertainty there can be biases in the estimate (for some grazing angles) that must be taken into account. The above conclusions will be supported through the use of monte carlo simulations of scattering from a rippled interface. The simulations are carried out in the context of discriminating between alternative acoustic models of sand sediments. [Work supported by ONR.]
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