Geoacoustic inversion using a rotated coordinate system and simulated annealing

Author

Fialkowski, Laurie T. ; Lingevitch, Joseph F. ; Perkins, John S. ; Dacol, Dalcio K. ; Collins, Michael D.

Author_Institution

Naval Res. Lab., Washington, DC, USA

Volume

28

Issue

3

fYear

2003

fDate

7/1/2003 12:00:00 AM

Firstpage

370

Lastpage

379

Abstract

An efficient method for geoacoustic inversions in a range-dependent ocean waveguide is implemented and tested with synthetic data. This method combines a simulated annealing search with an optimal coordinate rotation that increases the efficiency of navigating parameter landscapes for which parameter coupling is important. The coordinate rotation associated with the parameter couplings also provides information about which parameters are resolvable for a particular inversion frequency and array geometry. Using this information, results from several single-frequency inversions can be combined to obtain an estimate for the sediment parameters.

Keywords

acoustic measurement; acoustic waveguides; gradient methods; inverse problems; oceanographic techniques; simulated annealing; underwater sound; array geometry; geoacoustic inverse problems; geoacoustic inversion; gradient methods; inversion frequency; optimal coordinate rotation; optimization methods; parameter coupling; parameter landscape navigation; range-dependent ocean waveguide; rotated coordinate system; sediment parameters; simulated annealing; single-frequency inversions; underwater acoustics; Cost function; Equations; Frequency estimation; Geoacoustic inversion; Inverse problems; Navigation; Oceans; Optimization methods; Sediments; Simulated annealing;

fLanguage

English

Journal_Title

Oceanic Engineering, IEEE Journal of

Publisher

ieee

ISSN

0364-9059

Type

jour

DOI

10.1109/JOE.2003.816686

Filename

1240001