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Sensitivity of space-borne SAR data to forest parameters over sloping terrain : Theory and experiment / Thierry Castel in International Journal of Remote Sensing IJRS, vol 22 n° 12 (August 2001)  

Public [article]  inInternational Journal of Remote Sensing IJRS > vol 22 n° 12 (August 2001) . - pp 2351 - 2376 Titre : Sensitivity of space-borne SAR data to forest parameters over sloping terrain : Theory and experiment Type de document : Article/Communication Auteurs : Thierry Castel, Auteur ; Amélie Beaudoin, Auteur ; Nicolas Stach , Auteur ; N. Stussi, Auteur ; Thuy Le Toan, Auteur ; Paul Durand, Auteur Année de publication : 2001 Article en page(s) : pp 2351 - 2376 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications de télédétection [Termes IGN] biomasse aérienne [Termes IGN] forêt [Termes IGN] image radar moirée [Termes IGN] pente Résumé : (auteur) Recently, SAR data proved to be useful for the retrieval of forest biomass. However, the effects of terrain slope must be addressed towards the generalization of biomass retrieval for varied forest and environmental conditions. To this aim, we developed experimental and theoretical approaches allowing the study of multi-frequency/multi-polarization forest backscatter of a given forest type, as a function of forest parameters and SAR local incidence angle over the relief. The experimental results showed that the sensitivity of SAR data to biomass was similar to that obtained over a flat terrain, only if the backscatter data were calibrated for slope effects. Moreover, the backscatter must also be corrected for its angular decrease, which can be removed using a simple angular model developed under assumptions of theoretical equations. The highest correlation of corrected backscatter with forest parameters related to aboveground biomass (such as stand age and bole volume) was achieved at L-HV 55°. Numéro de notice : A2001-227 Affiliation des auteurs : IFN+Ext (1958-2011) Thématique : FORET/IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1080/01431160121407 Date de publication en ligne : 25/11/2010 En ligne : https://doi.org/10.1080/01431160121407 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=100156 [article]

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Code-barres	Cote	Support	Localisation	Section	Disponibilité
080-01111	RAB	Revue	Centre de documentation	En réserve L003	Disponible