Abstract
The scattering strength of the ocean bottom as a function of angle and frequency is a fundamental input for predicting the performance of active sonar systems, particularly in littoral waters. The small-slope formulation for scattering from the rough water/bottom interface is by now well established both as a physical theory and as a numerical algorithm [Gragg et al., JASA 110 (2001)]. In this work, a data-model comparison is used to address the following questions. How well do the predictions of this elastic theory agree with data measured at sea? How sensitively does the theoretical prediction depend on the set of input parameters that characterize (a) the geoacoustics of the bottom material and (b) the spectrum of the surface roughness? For a given littoral area, how much needs to be known about these parameters for ASW/MCM purposes? How much of that could be estimated by remote (e.g., acoustic inversion) methods?
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Gragg, R.F., Soukup, R.J., Gauss, R.C. (2002). Backscatter from Elastic Ocean Bottoms: Using the Small Slope Model to Assess Acoustical Variability and Uncertainty. In: Pace, N.G., Jensen, F.B. (eds) Impact of Littoral Environmental Variability of Acoustic Predictions and Sonar Performance. Springer, Dordrecht. https://doi.org/10.1007/978-94-010-0626-2_24
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DOI: https://doi.org/10.1007/978-94-010-0626-2_24
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