ALGORITHM OF RECONSTRUCTION OF THE SOUND SPEED PROFIL IN A SHALLOW-WATER GEOACOUSTIC WAVEGUIDE FROM MODAL DISPERSION DATA
O. S. Zaikin1, P. S. Petrov2,3
1Matrosov Institute for System Dynamics and Control Theory, Siberian Branch, Russian Academy of Sciences, 664033, Irkutsk, ul. Lermontova, 134
2V.I. Il'ichev Pacific Oceanological Institute, Far-Eastern Branch, Russian Academy of Sciences, 690041, Vladivostok, ul. Baltiiskaya, 43
3Far-Eastern Federal University, 690950, Vladivostok, ul. Sukhanova, 8
Keywords: профиль скорости звука, модовая дисперсия, обратная задача геоакустики, вычислительный кластер, параллельные вычисления, sound speed velocity, modal dispersion, inverse problem of geoacoustics, computational cluster, parallel computations
Abstract
The problem of reconstruction of the sound speed profile in the water column in a shallow-sa waveguide by means of geoacoustic inversion from single-hydrophone recording of a pulse signal is considered. A method for solving this problem with the use of high-performance computer systems is developed and implemented. Numerical experiments performed by using this algorithm show that the sound speed profile in the water column can be reconstructed on the basis of some very rough estimates for geoacoustic parameters of the bottom. The use of tehse rough estimates does not affect the accuracy of sound speed profile reconstruction provided that the signal spectrum containg some components of sufficiently high frequency.
|
