Multipath field representation for seabed parameter extraction using backscatter data from shadow zones

Abstract

Inversion strategies for bottom parameter estimation in shallow water impose stringent requirements on accuracy and speed of acoustic models. We highlight the importance of second order effects as first order determinants of the field using examples based on experimental data, employ high accuracy adaptive wavenumber integration techniques to evaluate the terms of the multipath expansion without approximation, and provide a basis for more accurate, efficient prediction of variable shallow water fields.