SYSTEM AND METHOD FOR MODELLING MULTIBEAM BACKSCATTER FROM A SEAFLOOR

摘要

The invention provides a method of modelling multibeam backscatter from a seafloor. The method comprises determining, with a computer processor, an area of the seafloor ensonified by an incident beam wavefield, the beam wavefield represented at least partly by a local beam incidence angle and a beam amplitude value; calculating, with a computer processor, an approximate incident beam wavefield, scattered back from the ensonified area of the seafloor, using a boundary integral and Lambert's Law approximation; and calculating, with a computer processor, one or more beam incidence angles in the beam wavefield to model the effect of surface roughness of the seafloor. The invention further provides a system configured to model multibeam backscatter from a seafloor.