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| HAL : hal-00386481, version 1 |
| Fiche détaillée |  Récupérer au format |
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| IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP 2008, Taipei : Taiwan, Province Of China (2008) |
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| Motion effect modeling in multipath configuration using warping based lag-doppler filtering |
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| Nicolas Josso 1Cornel Ioana 1 |
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| MODE Collaboration(s) |
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| (2009) |
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| The estimation of the impulse response (IR) of a propagation channel is necessary for a large number of acoustic applications: underwater communication, detection and localization, etc. Basically, it informs us about the distortions of a transmitted signal in one channel. This operation is usually subject to additional distortions due to the motion of the transmitter-channel receiver configuration. This paper points on the effects of the motion while estimating the IR by matching filtering between the transmitted and the received signals and introduces a new motion compensation method. Knowing the transmitted signal, the "apparent" speed of each propagation path can be estimated using wideband ambiguity function [1]. Indeed, some interference appears in the wideband ambiguity plane because of the multipath propagation. A warpingbased lag-Doppler filtering method is proposed allowing us to accurately estimate the IR of the channel. |
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| 1 : | Grenoble Images Parole Signal Automatique (GIPSA-lab) |
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CNRS : UMR5216 – Université Joseph Fourier - Grenoble I – Université Pierre-Mendès-France - Grenoble II – Université Stendhal - Grenoble III – Institut Polytechnique de Grenoble - Grenoble Institute of Technology |
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| 2 : | Développement des Technologies Nouvelles (DTN) |
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ENSTA Bretagne |
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| 3 : | Service Hydrographique et Océanographique de la Marine (SHOM) |
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Ministère de la Défense |
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| SIGMAPHY |
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| Domaine | : | Sciences de l'ingénieur/Traitement du signal et de l'image Informatique/Traitement du signal et de l'image |
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| Acoustic signal analysis – Motion compensation – Acoustic tomography – Time warping operators. |
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| Liste des fichiers attachés à ce document : | |||||
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| hal-00386481, version 1 | |
| http://hal.archives-ouvertes.fr/hal-00386481 | |
| oai:hal.archives-ouvertes.fr:hal-00386481 | |
| Contributeur : Jerome Mars | |
| Soumis le : Vendredi 22 Mai 2009, 04:42:25 | |
| Dernière modification le : Mardi 4 Décembre 2012, 14:29:25 | |
