Scattering Centers Monitoring in Refocused SAR Images on a High Resolution DEM

Andrei Anghel 1 Gabriel Vasile 1 Cornel Ioana 1 Remus Cacoveanu 2 Silviu Ciochina 2 Jean-Philippe Ovarlez 3, 4 Rémy Boudon 5 Guy D'Urso 5 Irena Hajnsek 6
1 GIPSA-SIGMAPHY - SIGMAPHY
GIPSA-DIS - Département Images et Signal
2 UPB - University Politehnica of Bucharest [Romania]
3 SONDRA - Laboratoire franco-singapourien de recherche en électromagnétisme et radars
4 Palaiseau - ONERA - The French Aerospace Lab
5 EDF R&D - EDF R&D
6 DLR Microwaves and Radar Institute
Abstract : Infrastructure monitoring applications can require the tracking of slowly moving points of a certain structure. Given a certain point from a structure to be monitored, in the context of available SAR products where the image is already focused in a slant range - azimuth grid, it is not obvious if this point is the scattering center, if it is in layover or if it is visible from the respective orbit. This paper proposes a scattering center monitoring procedure based on refocusing a set of SAR images on a provided high-resolution DEM of the structure. The scattering centers of the refocused image are detected in the 4-D tomography framework by testing if the main response is at zero elevation in the local elevation-velocity spectral distribution obtained using the Capon estimator. The algorithm is validated on real data acquired with the TerraSAR-X satellite over the Puylaurent water dam in France during March-June 2012. The relative displacements between scattering regions show very good agreement with the in situ measurements.
Type de document :
Communication dans un congrès
IEEE International Geoscience and Remote Sensing Symposium (IGARSS 2014), Jul 2014, Quebec, Canada. Proceedings of the International Geoscience and Remote Sensing Symposium, pp.1883 - 1886, 2014, 2014 IEEE International Geoscience and Remote Sensing Symposium (IGARSS 2014). 〈10.1109/IGARSS.2014.6946824〉
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https://hal-supelec.archives-ouvertes.fr/hal-01104814
Contributeur : Virginie Bouvier <>
Soumis le : lundi 19 janvier 2015 - 11:47:11
Dernière modification le : jeudi 15 novembre 2018 - 08:38:45

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SUPELEC | SUP_SONDRA | GIPSA-SIGMAPHY | ONERA | GIPSA-DIS | GIPSA | UGA | UGA-TEST-TER

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Andrei Anghel, Gabriel Vasile, Cornel Ioana, Remus Cacoveanu, Silviu Ciochina, et al.. Scattering Centers Monitoring in Refocused SAR Images on a High Resolution DEM. IEEE International Geoscience and Remote Sensing Symposium (IGARSS 2014), Jul 2014, Quebec, Canada. Proceedings of the International Geoscience and Remote Sensing Symposium, pp.1883 - 1886, 2014, 2014 IEEE International Geoscience and Remote Sensing Symposium (IGARSS 2014). 〈10.1109/IGARSS.2014.6946824〉. 〈hal-01104814〉

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