CAMBALA: Coupled Acoustic Modes with Bottom Attenuation in Linear Acoustics

Authors: Pavel Petrov^, Oleg Zaikin^^, Andrey Tyshchenko^

^Il'ichev Pacific Oceanological Institute FEB RAS

^^Matrosov Institute for System Dynamics and Control Theory SB RAS

DESCRIPTION

CAMBALA is aimed at computing sound propagation in 3D-varying shallow water waveguides.

CAMBALA Inversion tools is aimed at solving computationally hard inverse problems in underwater acoustics. In particular, it can reconstruct the sound speed profile or seabed parameters in a shallow water waveguide using a dispersion-based geoacoustic inversion scheme.

HOW TO BUILD

CAMBALA

Preliminary Windows actions

Download and extract sources.

Visual studio solution is here /src/VS_normal_modes/VS_normal_modes.sln

Preliminary Linux actions

git clone --recurse-submodules https://github.com/Nauchnik/CAMBALA.git

Common actions

cd src/normal_modes

cmake -DCMAKE_BUILD_TYPE=Release .

make

CAMBALA Inversion tools

Windows

Use the Visual studio solution ./src/VS_inversion_tools/VS_inversion_tools.sln

Linux

git clone --recurse-submodules https://github.com/Nauchnik/CAMBALA.git

cd src/inversion_tools

cmake -DCMAKE_BUILD_TYPE=Release .

make

HOW TO CREATE INVERTION SCENARIOS FOR CAMBALA INVERSION TOOLS

A manual on creating inversion scenarios is here \doc\Creating_an_inversion_scenario_file.pdf

HOW TO RUN CAMBALA INVERSION TOOLS

CAMBALA_inversion_tools.exe scenario_file_name verbosity

Possible verbosity values: 0, 1, 2.

NB! All additional files specified in a scenario file must be in the directory where a program is launched.

EXAMPLES FOR CAMBALA INVERSION TOOLS

NB! In all examples below CAMBALA_inversion_tools.exe must be first copied to the corresponding directory.

Example 1. Invert bottom parameters and the range correction.

Directory: /scenarios/CambalaInverse/Example_1_range_cb_rhob/

CAMBALA_inversion_tools.exe scenario1 1

Example 2. Invert bottom parameters and the sound speed profile.

Directory: /scenarios/CambalaInverse/Example_2_cb_rhob_ssp/

CAMBALA_inversion_tools.exe scenario2 1

CITATION

CAMBALA Inversion tools can be cited as follows:

@article{ZaikinP16-OIDP,
author  = "Oleg Zaikin and Pavel Petrov",
title   = "Algorithm of reconstruction of the sound speed profile in a shallow-water geoacoustic waveguide from modal dispersion data",
journal = "Optoelectronics, Instrumentation and Data Processing",
year    = "2016",
volume  = "52",
number  = "3",
pages   = "259--265"
}