Application of iterative hill climbing to the sound speed profile inversion in underwater acoustics

5th International Workshop on Mathematical Models and their Applications 2016

Zaikin, O.^1 ; Petrov, P.^2,3

Matrosov Institute for System Dynamics and Control Theory SB RAS, Irkutsk, Russia^1

V.I. il'Ichev Pacific Oceanological Institute FEB RAS, Vladivostok, Russia^2

Far Eastern Federal University, Vladivostok, Russia^3

关键词: Acoustical signals;    Geoacoustic inversion;    Hill climbing algorithms;    Inversion problems;    Iterative hill climbing algorithms;    Solution of inverse problems;    Sound speed profiles;    Waveguide parameter;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/173/1/012022/pdf
DOI  :  10.1088/1757-899X/173/1/012022

来源: IOP

【 摘 要 】

An application of the iterative hill climbing algorithm to the solution of inverse problems of underwater acoustics is discussed. Modal dispersion data extracted from a recording of a pulse acoustical signal is used as the input for the geoacoustic inversion procedure. The mismatch of the dispersion curves extracted from experimental data and computed from a given set of waveguide parameters is minimized over the parameters space. The solution of two test inversion problems is considered. It is shown that the iterative launches of the hill climbing algorithm allow to locate either the global minimum or a local minimum which is reasonably close to the former. In the latter case a reasonable estimate of the waveguide parameters is obtained.