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ECOLE SUPÉRIEURE D'ÉLECTRICITÉ Une grande école d'ingénieurs au cœur des sciences de l'information,de l'énergie et des systèmes |
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Conference papers
Scattering Centers Monitoring in Refocused SAR Images on a High Resolution DEM
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.
https://hal-supelec.archives-ouvertes.fr/hal-01104814
Contributor : Virginie Bouvier <>
Submitted on : Monday, January 19, 2015 - 11:47:11 AM
Last modification on : Wednesday, October 14, 2020 - 3:51:26 AM
Contributor : Virginie Bouvier <>
Submitted on : Monday, January 19, 2015 - 11:47:11 AM
Last modification on : Wednesday, October 14, 2020 - 3:51:26 AM