Communication Dans Un Congrès Année : 2007

Time-frequency modeling of shallow water environment: rigid vs. fluid seabed

Résumé

When the ocean seabed is considered to be rigid, the ideal waveguide model can be used to model the shallow water environment. However, a more realistic ocean waveguide model treats the ocean floor as a boundary between two different fluid media. In this paper, a frequency-domain characterization of shallow water environments is proposed based on this realistic waveguide model with a fluid boundary. First, the time-frequency characteristics of this model are studied as well as the impact of the environment parameters on the dispersive phenomena. Then a frequency-domain matched filter receiver is designed to obtain time-dispersion diversity once we separate the modes using warping techniques in the time-frequency plane. Simulations demonstrate that the new receiver design improves the bit error rate performance.

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hal-00326350 , version 1 (02-10-2008)

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  • HAL Id : hal-00326350 , version 1

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Jun Zhang, Bertrand Gottin, Antonia Papandreou-Suppappola, Cornel Ioana. Time-frequency modeling of shallow water environment: rigid vs. fluid seabed. SSP 2007 - 2007 IEEE workshop on Statistical Signal Processing, Aug 2007, Madison, WI, United States. ⟨hal-00326350⟩
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