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    Maximum likelihood time-domain beamforming using simulated annealing

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    Xu-Kevin_thesis.pdf (4.270Mb)
    Date
    1999-09
    Author
    Xu, Kevin  Concept link
    Metadata
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    Citable URI
    https://hdl.handle.net/1912/4656
    DOI
    10.1575/1912/4656
    Keyword
     Underwater acoustics; Signal processing; Simulated annealing; Time-domain analysis 
    Abstract
    An algorithm is developed for underwater acoustic signal processing with an array of hydrophones. With various acoustic signals coming from different directions, the maximum likelihood approach is used to estimate the source bearings and time series. Simulated annealing is used to implement the resulting time-domain beamformer. Broadband signals in spatially correlated noise are treated. Previous time-domain beamformers did not consider the correlation between random noise, and they did not use the concept of maximum likelihood, which is asymptotically optimal. We show that improved resolution can be achieved using this new method.
    Description
    Submitted in partial fulfillment of the requirements for the degree of Master of Science at the Massachusetts Institute of Technology and the Woods Hole Oceanographic Institution September 1999
    Collections
    • Applied Ocean Physics and Engineering (AOP&E)
    • WHOI Theses
    Suggested Citation
    Thesis: Xu, Kevin, "Maximum likelihood time-domain beamforming using simulated annealing", 1999-09, DOI:10.1575/1912/4656, https://hdl.handle.net/1912/4656
     

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