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Imagerie Radar à Synthèse d'Ouverture (RSO) Par Analyse En Ondelettes Continues Multidimensionnelles.

Abstract : The classical SAR (Synthetic Aperture Radar) imaging methods assume that the reflectors are isotropic (they behave the same way regardless the aspect under which they are viewed) and white (they have the same properties within the emitted bandwidth). Unfortunately, new capacities in SAR imaging (large bandwidth,large angular excursions of analysis) make these assumptions obsolete.

The purpose of the thesis work consisted in developing a time-frequency method based on the use of continuous wavelets allowing to highlight the anisotropic and coloration effects of the irradiated points.

A great part of the work consisted in exploiting the coloration and the anisotropy of the reflectors to discriminate a target in a SAR image.

Finally, the continuous wavelet analysis has been extended to polarimetric in order to improve the classification of random targets and deterministic ones then to interferometry with the aim of obtaining a better estimation of target height estimation.
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Contributor : Mohamed Tria Connect in order to contact the contributor
Submitted on : Friday, December 9, 2005 - 9:10:52 PM
Last modification on : Tuesday, March 16, 2021 - 3:44:16 PM
Long-term archiving on: : Friday, April 2, 2010 - 10:43:14 PM


  • HAL Id : tel-00011181, version 1



Mohamed Tria. Imagerie Radar à Synthèse d'Ouverture (RSO) Par Analyse En Ondelettes Continues Multidimensionnelles.. Traitement du signal et de l'image [eess.SP]. Université Paris Sud - Paris XI, 2005. Français. ⟨tel-00011181⟩



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