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Traitements temps-fréquence pour l'analyse de scènes complexes dans les images SAR polarimétriques

Abstract : This work concerns the analysis of polarimetric SAR images using time-frequency methods. Two applications are presented.
A study of moving target response behaviour leads to the definition of an adapted detection and refocusing method, based of the fractional Fourier transform. An extension of the approach to the case of targets which reflectivity is varying with frequency and observation angle is then considered. A method based on the Matching-Pursuit algorithm is proposed.
Building detection in polarimetric SAR images at L-band is studied in the timefrequency framework. The proposed approach uses time-frequency stationarity and correlation information to derive a classification of urban areas responses. Natural media and different types of man-made targets are identified. Applications of timefrequency classification results to cartography or building characterization are presented.
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https://tel.archives-ouvertes.fr/tel-00133586
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Submitted on : Tuesday, February 27, 2007 - 10:09:36 AM
Last modification on : Friday, January 8, 2021 - 3:42:42 AM
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  • HAL Id : tel-00133586, version 1

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Paul Leducq. Traitements temps-fréquence pour l'analyse de scènes complexes dans les images SAR polarimétriques. Traitement du signal et de l'image [eess.SP]. Université Rennes 1, 2006. Français. ⟨tel-00133586⟩

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