Oases-Scatt: OASES Target Scattering Simulator

Scatt is an optional addition to Oases, providing the capability of simulating acoustic scattering from canonical and complex objects embedded in fluid-elastic waveguides.

Licensing

Oases-Scatt is licensed through the MIT technology Licensing Office. Please contact 'tokeefe@mit.edu'.

A free license is available upon request for research collaborators.

Download

Licensees with valid username and password may download Oases-Scatt from the LAMSS software repository

> svn co --username new_user https://oceanai.mit.edu/svn/scatt Scatt

Documentation

Documentation and Users Guide is available in the distribution:

> cd Scatt/Manual
> latex manual
> dvips -f manual > manual.ps

Installation

The installation requires the Oases base package to be installed. The installation of the scatt components is performed with a generic CMAKE script, build.sh, with the root directory for the binaries as an argument:

> cd Scatt
> ./build.sh ~/Oases

Here the binaries are placed in the Oases/bin directory.

Example: Benchmark Scattering Solutions

The following shows a comparison of OASES-Scatt to finite element solutions for scattering from targets buried completely or partially in the seabed. The OASES-Scatt solution is denoted VSC (Virtual Source Concept).

  • M. Zampolli, A. Tesei and F.B. Jensen, "Benchmark problems for acoustic scattering from elastic objects in the free field and near the sea floor," J. Acoust. Soc. Am. 125: 89--98 (2009).

    Scattering geometry for completely and buried spherical shells

    Scattered field computed by OASES_Scatt (VSC) and a Finite Element solution using Perfectly Matched Layer approach to satisfying the radiation condition (FEM-PML) for a completely buried spherical shell

    Scattered field computed by OASES_Scatt (VSC) and a Finite Element solution using Perfectly Matched Layer approach to satisfying the radiation condition (FEM-PML) for a partially buried spherical shell