A traditional forward scattering theory view of shallow water acoustics

2015 ◽  
Vol 138 (3) ◽  
pp. 1896-1896
Author(s):  
Timothy F. Duda
Keyword(s):  
Shallow Water ◽  
Scattering Theory ◽  
Forward Scattering ◽  
Shallow Water Acoustics ◽  
Theory View

Hawaii Experimental Acoustics Range for Shallow Water Applications

2011 ◽  
Vol 45 (3) ◽  
pp. 69-76 ◽  
Author(s):  
Tom Fedenczuk ◽  
Eva-Marie Nosal
Keyword(s):  
Shallow Water ◽  
Water Environment ◽  
Shallow Water Acoustics ◽  
Central Node ◽  
Long Baseline ◽  
Wide Range ◽  
Shallow Water Environment ◽  
Near Shore ◽  
Monitoring And Surveillance ◽  
Passive Acoustic

AbstractShallow water acoustics provide a means for monitoring and surveillance of near-shore environments. This paper describes the current and future capabilities of the low- to high-frequency Hawaii Experimental Acoustics Range (HEAR) that was designed to facilitate a wide range of different shallow water acoustics experiments and allow researchers from various institutions to test various array components and configurations. HEAR is a portable facility that consists of multiple hydrophones (12‐16) cabled independently to a common central node. The design allows for variable array configurations and deployments in three modes: experimental (off boats and piers), autonomous, and cabled. An application of HEAR is illustrated by the results from a deployment at Makai Research Pier, Oahu, Hawaii. In this deployment, HEAR was configured as a long-baseline range of two volumetric subarrays to study passive acoustic tracking capabilities in a shallow water environment.

scholarly journals Shallow water acoustics on the Canadian East Coast Continental Shelf

1988 ◽  
Vol 84 (S1) ◽  
pp. S150-S150
Author(s):  
Philip R. Staal ◽  
Steven J. Hughes ◽  
Dale D. Ellis ◽  
David M. F. Chapman
Keyword(s):  
Continental Shelf ◽  
Shallow Water ◽  
East Coast ◽  
Shallow Water Acoustics

A ray mode parabolic equation, and examples of its application in shallow water acoustics propagation problems

2015 ◽  
Author(s):  
Mikhail Yu. Trofimov ◽  
Sergey B. Kozitskiy ◽  
Alena D. Zakharenko ◽  
Pavel S. Petrov
Keyword(s):  
Parabolic Equation ◽  
Shallow Water ◽  
Shallow Water Acoustics

Tank experiments and model comparisons of shallow water acoustics over an elastic bottom

2005 ◽  
Vol 117 (4) ◽  
pp. 2576-2576
Author(s):  
Jon M. Collis ◽  
William L. Siegmann ◽  
Michael D. Collins ◽  
Erik C. Porse ◽  
Harry J. Simpson ◽  
...  
Keyword(s):  
Shallow Water ◽  
Shallow Water Acoustics ◽  
Model Comparisons ◽  
Elastic Bottom

Shallow Water Acoustics for Random Area (SWARA)

2017 ◽  
Vol 96 (3) ◽  
pp. 4079-4098
Author(s):  
Sangram More ◽  
K. Krishna Naik
Keyword(s):  
Shallow Water ◽  
Shallow Water Acoustics

Forward Scattering and Volterra Renormalization for Acoustic Wavefield Propagation in Vertically Varying Media

2016 ◽  
Vol 20 (2) ◽  
pp. 353-373 ◽  
Author(s):  
Jie Yao ◽  
Anne-Cécile Lesage ◽  
Fazle Hussain ◽  
Donald J. Kouri
Keyword(s):  
Scattering Theory ◽  
Incidence Angle ◽  
Neumann Series ◽  
Forward Scattering ◽  
Acoustic Medium ◽  
Inversion Method ◽  
Angle Of Incidence ◽  
Direct Inversion ◽  
Reference Medium ◽  
Density Perturbations

AbstractWe extend the full wavefield modeling with forward scattering theory and Volterra Renormalization to a vertically varying two-parameter (velocity and density) acoustic medium. The forward scattering series, derived by applying Born-Neumann iterative procedure to the Lippmann-Schwinger equation (LSE), is a well known tool for modeling and imaging. However, it has limited convergence properties depending on the strength of contrast between the actual and reference medium or the angle of incidence of a plane wave component. Here, we introduce the Volterra renormalization technique to the LSE. The renormalized LSE and related Neumann series are absolutely convergent for any strength of perturbation and any incidence angle. The renormalized LSE can further be separated into two sub-Volterra type integral equations, which are then solved noniteratively. We apply the approach to velocity-only, density-only, and both velocity and density perturbations. We demonstrate that this Volterra Renormalization modeling is a promising and efficient method. In addition, it can also provide insight for developing a scattering theory-based direct inversion method.

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