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Land Surface Remote Sensing in Continental Hydrology |
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Land Surface Remote Sensing in Continental Hydrology, ch. 3. Using satellite scatterometers to monitor continental surfaces / Pierre-Louis Frison (2017)
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Titre de série : Land Surface Remote Sensing in Continental Hydrology, ch. 3 Titre : Using satellite scatterometers to monitor continental surfaces Type de document : Chapitre/Contribution Auteurs : Pierre-Louis Frison , Auteur ; Lionel Jarlan, Auteur ; Eric Mougin, Auteur
Editeur : Amsterdam [Pays Bas] : Elsevier Année de publication : 2017 Note générale : bibliographie Langues : Français (fre) Descripteur : [Vedettes matières IGN] Applications de télédétection
[Termes IGN] biomasse aérienne
[Termes IGN] dégel
[Termes IGN] diffusomètre
[Termes IGN] humidité du sol
[Termes IGN] stress hydrique
[Termes IGN] zone boréaleRésumé : (auteur) Scatterometers are sidelooking radar sensors designed to precisely evaluate the radar backscatter coefficient σ0 of the surfaces being observed. However, as we will aim to demonstrate, this high radiometric resolution is obtained at the cost of spatial resolution. Scatterometers are therefore radar sensors complementary to synthetic aperture radars (SAR). These promote spatial resolution at the cost of radiometric resolution. Thus, while current SAR are characterized by a spatial resolution of about 1 m, with a strong radiometric variation linked to the speckle effect, satellite scatterometers have a spatial resolution accurate to about 10 km, with an precision on the estimation of σ0 within a tenth of a decibel. Originally designed in order to evaluate the speed and direction of wind across ocean surfaces, the potential of these sensors for the monitoring of continental surfaces on a regional or global scale has been demonstrated. Numéro de notice : H2017-032 Affiliation des auteurs : UPEM-LASTIG+Ext (2016-2019) Thématique : IMAGERIE Nature : Chapître / contribution nature-HAL : ChOuvrScient DOI : 10.1016/B978-1-78548-104-8.50003-6 Date de publication en ligne : 23/09/2016 En ligne : https://doi.org/10.1016/B978-1-78548-104-8.50003-6 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=95536