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Auteur Hemant Sahu |
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Time series potential assessment for biophysical characterization of orchards and crops in a mixed scenario with Sentinel-1A SAR data / Hemant Sahu in Geocarto international, vol 35 n° 14 ([15/10/2020])
[article]
Titre : Time series potential assessment for biophysical characterization of orchards and crops in a mixed scenario with Sentinel-1A SAR data Type de document : Article/Communication Auteurs : Hemant Sahu, Auteur ; Dipanwita Haldar, Auteur ; Abhishek Danodia, Auteur ; et al., Auteur Année de publication : 2020 Article en page(s) : pp 1627 - 1639 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications de télédétection
[Termes IGN] coefficient de rétrodiffusion
[Termes IGN] image radar moirée
[Termes IGN] image Sentinel-SAR
[Termes IGN] modèle de rétrodiffusion
[Termes IGN] polarisation
[Termes IGN] série temporelle
[Termes IGN] variable biophysique (végétation)
[Termes IGN] vergerRésumé : (auteur) Potential of Sentinel-1A SAR data was assessed for the time-series analysis of orchard biophysical parameters and crop system. The study revealed characteristics variations in the backscatter coefficient with respect to time and polarization for age in VH polarization than in VV and ratio of VV/VH polarization showing discrimination of young orchard particularly in VV polarization. The parameter of the orchard (age, DBH, canopy radius and visual height) shows a promising relationship with backscatter coefficient. Out of several regression models, VV channel responds with a fair regression coefficient of 0.54, 0.52, 0.48 and 0.44 for height with rmse of 0.5, 1.3, 0.7 and 0.6 for age, DBH, canopy radius and visual height, respectively. Multiple regression coefficient of 0.61 was observed for January 2018 in VV polarization as best date for study. These empirical relationships have potential for the inverse backscatter modelling. Numéro de notice : A2020-620 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1080/10106049.2019.1583776 Date de publication en ligne : 10/06/2019 En ligne : https://doi.org/10.1080/10106049.2019.1583776 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=96003
in Geocarto international > vol 35 n° 14 [15/10/2020] . - pp 1627 - 1639[article]