Simplex simulated annealing, a hybrid approach to geoacoustic inversion with application to Mediterranean Sea acoustic data

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dc.contributor.authorFallat, Mark Ryanen_US
dc.date.accessioned2024-08-13T22:16:28Z
dc.date.available2024-08-13T22:16:28Z
dc.date.copyright1999en_US
dc.date.issued1999
dc.degree.departmentSchool of Earth and Ocean Sciences
dc.degree.levelMaster of Science M.Sc.en
dc.description.abstractRecently, in ocean acoustics, there has been a great deal of interest in the development of inversion algorithms. One problem these algorithms have been applied to is geoacoustic inversion. In geoacoustic inversion, properties of the seabed are sought from measurements of acoustic energy that has propagated through the ocean environment. In this thesis, a new hybrid algorithm, simplex simulated annealing, is developed for the geoacoustic inversion problem. Simplex simulated annealing is a combina­tion of the local downhill simplex method and a fast simulated annealing global search algorithm. Hybrid algorithms are effective and efficient be­cause they exploit the good features of the local and global algorithms while overcoming the respective weaknesses of the techniques. The sim­plex simulated annealing algorithm is validated using synthetic testcases and is compared with both downhill simplex and simulated annealing. The new algorithm is also applied to experimental data recorded in the Mediterranean Sea. For the experimental inversion the results are in good agreement with the available ground truth data and results from previous experiments conducted in the same region.
dc.format.extent91 pages
dc.identifier.urihttps://hdl.handle.net/1828/17729
dc.rightsAvailable to the World Wide Weben_US
dc.titleSimplex simulated annealing, a hybrid approach to geoacoustic inversion with application to Mediterranean Sea acoustic dataen_US
dc.typeThesisen_US

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