Abstract
A serious weakness in modeling shallow water reverberation is the uncertainty in bottom scattering strength and its angle-dependence. If the bottom scattering law is assumed to be a separable function of an incoming and outgoing angle it follows that the reverberation contains separable incoming and outgoing propagation terms. Thus the returning multipaths from a scattering patch are weighted directly by (the outgoing part of) the scattering law. This means that comparisons of reverberation and propagation angle-dependence on a vertical receiving array have the potential to reveal the scattering law directly. In this paper we discuss a reverberation experiment with complementary propagation measurements using a VLA and a broadband source to deduce scattering law angle-dependence and absolute scattering strength. The approach is justified by some analysis, and findings are compared with the numerical results of a new multistatic sonar model, SUPREMO. The experiment was conducted in a fairly flat bottomed part of the Mediterranean south of Sicily during BOUNDARY2002.
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