Report on normal mode and MATLAB based reverberation model

PDF

Authors
  1. Preston, J.R.
  2. Ellis, D.D.
Corporate Authors
Defence R&D Canada - Atlantic, Dartmouth NS (CAN);Pennsylvania State Univ, State College PA (US) Applied Research Lab
Abstract
This paper describes a normal mode and MATLAB based reverberation model. The purpose was to develop a fast shallow water reverberation model, based on the normal-mode method of Ellis and LePage, to replace the Generic Sonar Model currently used for inversion of reverberation data. Calculations are assumed to be narrowband in frequency, with a constant phase and group velocity. The initial implementation is bistatic for a range-independent environment. It will handle towed array beam patterns for comparison with data, and simultaneously do calculations on a number of beams. Surface and bottom scattering, but not volume scattering, have been incorporated. Options for the scattering kernel are Lambert’s Law, perturbation theory, and Pierson-Moskowitz surface scattering, as well as pre-computed scattering kernels read from a table. The formulation leads to a fairly efficient matrix implementation. Results are presented for a number of problems from the ONR Reverberation Modeling Workshop held at Austin, Texas, 7–9 November 2006.

Il y a un résumé en français ici.

Report Number
DRDC-ATLANTIC-TM-2006-290 — Technical Memorandum
Date of publication
01 Jun 2008
Number of Pages
50
DSTKIM No
CA032156
CANDIS No
531246
Format(s):
CD ROM

Permanent link

Document 1 of 1

Date modified: