Title :
Matched-field geoacoustic inversion of low-frequency source tow data from the ASIAEX East China Sea experiment
Author :
Huang, Chen-Fen ; Hodgkiss, William S.
Author_Institution :
Scripps Instn. of Oceanogr., Univ. of California, La Jolla, CA, USA
Abstract :
Geoacoustic inversion results based on data obtained during the Asian Seas International Acoustics Experiment (ASIAEX) 2001 East China Sea experiment are reported. The inversion process uses a genetic-algorithm-based matched-field-processing approach to optimize the search procedure for the unknown parameters. Inversion results include both geometric and geoacoustic variables. To gauge the quality of the inversion, two different analyses are employed. First, the inversion results based upon discrete source-receiver ranges are confirmed by continuous source localization over an interval of time. Second, separate inversions at many different ranges are carried out and the uncertainties of the parameter estimation are analyzed. The analysis shows that both methods yield consistent results, ensuring the reliability of inversion in this study.
Keywords :
acoustic signal processing; genetic algorithms; geophysical signal processing; inverse problems; oceanographic regions; oceanographic techniques; underwater sound; Asian Seas International Acoustics Experiment; East China Sea; genetic algorithms; geoacoustic inversion; matched-field processing; parameter estimation; seismo-acoustics; sensitivity analysis; source localization; uncertainty estimate; Acoustic measurements; Data analysis; Genetic algorithms; Geoacoustic inversion; Marine vehicles; Parameter estimation; Particle measurements; Sea measurements; Sensitivity analysis; Uncertainty;
Journal_Title :
Oceanic Engineering, IEEE Journal of
DOI :
10.1109/JOE.2004.836989
