Abstract
Reflection coefficient data has the potential for sediment model verification and remote sensing of sediment parameters. However, a significant component of the bistatic acoustic response is scattering from the rough interface. For example, in typical ocean conditions, surface roughness can alter the apparent normal reflection coefficient by 15 dB or more over a frequency range from 10 to 100 kHz. Therefore, it is important to quantify the contribution from scattering to determine the smooth surface reflection coefficient from bistatic data. The Bottom Response from Inhomogeneities and Surface (BoRIS-SSA) code uses the small slope approximation to calculate bistatic response from rough surfaces. BoRIS-SSA can incorporate both stochastic realizations of the ocean bottom or data from stereo-photographic equipment. In this study, bistatic laboratory data taken at 50–150 kHz from a smoothed and roughened interfaces will be compared to BoRIS-SSA calculations. The model will be considered for its ability to predict both the average value of the bistatic response and the distribution of the data.
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