Exploiting reliable features of the ocean channel response

• Author(s): Porter, Michael B. ; Jesus, S. M. ; Stephan, Yann ; Demoulin, Xavier ; Coelho, Emanuel
• Date: 1997
• Persistent ID: http://hdl.handle.net/10400.1/5202
• Origin: Sapientia - Universidade do Algarve
• Subject(s): Variability; Coastal waters
• Document Type: Part of book or chapter of book
• Language: English

Description

Modelling sound propagation in shallow water is notoriously difficult. The main difficulties are, of course, ocean variability characteristic of coastal waters and the typpicaly downward refracting profiles that make the acoustic field extremely sensitive to the bottom characteristics. Meanwhile accurate prediction of transimission loss curves at a single frequency requires that the relative phase of each surface and bottom echo is predicted with precision.