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Alez
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#1 project details

Post by Alez »

Project home


What is Acoustics@home?

Acoustics@home is a BOINC-based volunteer computing project aimed at solving inverse problems in underwater acoustics. You can contribute to our research by running a free program on your computer.
In underwater acoustics the notion of geoacoustic inversion refers to a collection of techniques that can be used for the reconstruction of medium parameters. The medium parameters are usually understood as the sound speed profile in water (i.e., the dependence of the sound speed on the depth) and the sound speed and density in the sea bottom sediment layers. Medium parameters reconstruction is of great importance for problems of underwater communication and for the development of underwater navigation systems.

While normally measurements for the geoacoustic inversion are performed using expensive receiver arrays, recently it was shown that single-hydrophone recording of a broadband pulse signal can be also successfully used for estimating the medium parameters.

The method of geoacoustic inversion developed in our study is based on using modal dispersion data. Waveguide dispersion is usually induced by the difference in group velocities of propagation of normal waves of different mode numbers at different frequencies. By using special algorithms of the frequency-time analysis of signals, it is possible to filter out the modal components of a pulse signal from its time series recorded by a single hydrophone. The implementation of this method in practice can be thought of as a solution of an optimization problem in a (very large) discrete search space, and every evaluation of the cost function requires numerous solutions of an acoustic spectral problem. Thus, the whole computational burden can be easily divided into a large number of relatively simple independent tasks, which can be solved using volunteer computing.
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Alez
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#2 Re: Acoustics@home project details

Post by Alez »

Acoustics@home is available on the following platforms

Acoustics@home apps
ApplicationVersionDate
Microsoft Windows (98 or later) running on an Intel x86-compatible CPU 0.15 27 Aug 2017, 11:09:15 UTC
Microsoft Windows running on an AMD x86_64 or Intel EM64T CPU 0.15 27 Aug 2017, 11:09:10 UTC
Linux running on an Intel x86-compatible CPU 0.15 27 Aug 2017, 11:09:11 UTC
Linux running on an AMD x86_64 or Intel EM64T CPU 0.15 27 Aug 2017, 11:09:12 UTC
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#3 Re: Acoustics@home project details

Post by Alez »

Founders of the project

V.I. Ilichev Pacific Oceanological Institute of Far Eastern Branch of Russian Academy of Science, Laboratory of Geophysical Hydrodyna mics. Vladivostok, Russia.
Far Eastern Federal University, Department of Algebra, Geometry and Analysis. Vladivostok, Russia.
Matrosov Institute for System Dynamics and Control Theory of Siberian Branch of Russian Academy of Science, Laboratory of Discrete An alysis and Applied Logic. Irkutsk, Russia.
A.A. Kharkevich Institute for Information Transmission Problems of Russian Academy of Sciences, Department of Distributed Computing. Moscow, Russia.
Dorodnicyn Computing Centre, Federal Research Center 'Computer Science and Control' of Russian Academy of Sciences, Department of App lied Optimization Problems. Moscow, Russia.

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©2017 Matrosov Institute for System Dynamics and Control Theory of SB RAS

Project personnel can be found here

Publications can be found here

as of september 2017 they were


  • 2017

Oleg Zaikin and Pavel Petrov. Application of iterative hill climbing to the sound speed profile inversion in underwater acoustics // In Proc. of the Fifth International Workshop on Mathematical Models and their Applications. IOP Conference Series: Materials Science and Engineering, Volume 173. 2017. pp. 1-8
  • 2016

Oleg Zaikin and Pavel Petrov. Algorithm of reconstruction of the sound speed profile in a shallow-water geoacoustic waveguide from modal dispersion data // Optoelectronics Instrumentation and Data Processing. Vol. 52, Issue 3. pp. 259-265
  • 2014

Pavel Petrov. A method for single-hydrophone geoacoustic inversion based on the modal group velocities estimation: Application to a waveguide with inhomogeneous bottom relief // Proceedings of the International Conference Day on Diffraction. 2014. pp. 186–191

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#4 Re: Acoustics@home project details

Post by Alez »

Application version 0.15 and new experiment

Application version 0.15 was released. We slightly modified the uniform and the weighted main calculation functions. Also, 2 new such functions (uniform2 and weighted2) were added. A new experiment was launched. In this experiment, we need to solve sound speed profile estimation. In particuler, given distance between the source and the reciever of a signal (and also density and sound speed in the bottom), we need to find sound speed values for all 5 water layers.
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#5 Re: Acoustics@home project details

Post by Alez »

Applications updated to 0.16 version .

Acoustics@home is available on the following platforms

Acoustics@home apps
ApplicationVersionDate
Microsoft Windows (98 or later) running on an Intel x86-compatible CPU 0.16 12 Sep 2017
Microsoft Windows running on an AMD x86_64 or Intel EM64T CPU 0.16 12 Sep 2017
Linux running on an Intel x86-compatible CPU 0.16 12 Sep 2017
Linux running on an AMD x86_64 or Intel EM64T CPU 0.16 12 Sep 2017
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