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Extraction du « 3D » par interférométrie radar à haute résolution

David Petit 1
1 IRIT-TCI - Traitement et Compréhension d’Images
IRIT - Institut de recherche en informatique de Toulouse
Abstract : Since few years, interferometry radar has largely highlighted its aptitude to measure low displacements of the ground, or to recreate Digital Elevation Models (DEM). However, the use of interferometric techniques for high resolutions, in particular in urban environment, is the trickiest. Indeed, the geometrical characteristics of a radar acquisition and the properties of the radar wave create ambiguities in the interferometric signal. Initially, an approach by simulation was adopted, in order to study the impact of the phenomena brought into play, and to test the techniques likely to raise ambiguities, under perfectly controlled conditions. Thus, works on radar high resolution highlighted cases of the spatial correlation of phase on real and simulated data. A proposal for a modeling of the phenomenon was carried out, and we showed the implications within the framework of interferometric processing. We then studied the possibility of an optimal processing of the layover areas for the “3D” rebuilding with simulated data, thanks to techniques of frequential filtering. Finally, we underlined the interest of a rebuilding adapted to considered objects, thanks to a fuzzy classification based on the whole information extracted from the image
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https://tel.archives-ouvertes.fr/tel-00009833
Contributor : David Petit <>
Submitted on : Tuesday, July 26, 2005 - 10:39:19 AM
Last modification on : Saturday, June 20, 2020 - 3:37:57 AM
Long-term archiving on: : Tuesday, September 7, 2010 - 5:15:55 PM

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  • HAL Id : tel-00009833, version 1

Citation

David Petit. Extraction du « 3D » par interférométrie radar à haute résolution. Traitement du signal et de l'image [eess.SP]. Université Paul Sabatier - Toulouse III, 2004. Français. ⟨tel-00009833⟩

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