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Bayesian time delay estimation for ocean acoustic tomography

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2 Author(s)
D. Mauuary ; Centre d''Etudes des PHenomenes Aleatoires et Geophys., Saint Martin d''Heres, France ; G. Jourdain

We use the concept of Bayesian estimation for estimating the time delays in multipath ocean acoustic tomography (MOAT). The time delay estimation (TDE) from a signal waveform can be seen as a full inversion problem which has to be associated to the geophysical inversion (GI) scheme. Using as a consequence some Bayesian algorithms, they cope with some problems which classically happen in MOAT (unstability and poor signal to noise ratio data). A supplementary reason to use Bayesian algorithms is that it is easy to find some pertinent prior information. Bayesian TDE gives a chance for the tomographic tool to apply in difficult oceanic conditions

Published in:

Acoustics, Speech, and Signal Processing, 1994. ICASSP-94., 1994 IEEE International Conference on  (Volume:ii )

Date of Conference:

19-22 Apr 1994