TERMIUM Plus^®

Fiche 1,  Justifications,  Anglais

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Passive microwave radiometers can be grouped into two categories: conical scanning radiometers and cross-track scanning radiometers. A passive microwave radiometer is considered a conical scanning radiometer when the footprint size and earth incidence angle remain unchanged across the scan line, while a cross-track scanning radiometer has varying footprint size and earth incidence angle across the scan line.  4, fiche 1, Anglais, - conical%2Dscanning%20radiometer

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Conical scanning radiometers are characterized by a continuous instrument calibration, with the sensors passing, at every rotation, below two calibration sources: a cold-sky reflector ... and an on-board calibration target (OBCT) which provides a hot temperature reference.  5, fiche 1, Anglais, - conical%2Dscanning%20radiometer

Fiche 1,  Justifications,  Français

Fiche 1,  Justifications,  Espagnol

Fiche 2,  Justifications,  Anglais

Record number: 2, Textual support number: 1 DEF

The AATSR instrument is an imaging radiometer primarily designed to measure global Sea Surface Temperature (SST) to the high levels of accuracy and stability required for climate research and modelling.  4, fiche 2, Anglais, - advanced%20along%20track%20scanning%20radiometer

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The AATSR (Advanced Along Track Scanning Radiometer) instrument has been successfully launched on board the ENVISAT spacecraft on 1st March 2002 at 01:07 GMT from the Kourou spaceport in French Guiana.  5, fiche 2, Anglais, - advanced%20along%20track%20scanning%20radiometer

Fiche 2,  Justifications,  Français

Record number: 2, Textual support number: 1 CONT

L’AATSR (Advanced Along Track Scanning Radiometer) est un radiomètre à balayage le long de la trace, qui mesurera la température de la surface de la mer dans quatre canaux infra-rouge et observera la végétation du sol dans trois canaux du spectre visible. Il servira à élaborer des modèles visant à déterminer l’évolution à l’échelle du globe des modifications de l’environnement.  5, fiche 2, Français, - version%20am%C3%A9lior%C3%A9e%20de%20l%26rsquo%3BATSR%20d%26rsquo%3BERS%2D1

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Équipement du satellite ESR-2.  7, fiche 2, Français, - version%20am%C3%A9lior%C3%A9e%20de%20l%26rsquo%3BATSR%20d%26rsquo%3BERS%2D1

Fiche 2,  Justifications,  Espagnol

Fiche 3,  Justifications,  Anglais

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The Black Body Calibration Mechanism. The black body observations are performed at least once a day. The mechanism uses two black bodies: one having the ambient spacecraft temperature and one heated to about 50 K above it. First the black body at ambient spacecraft temperature is viewed, and forms the reference signal. Then the heated black body is viewed, and the temperature difference between both black bodies is used to obtain the response of the detectors. The obtained response is converted into counts and transmitted to earth.  4, fiche 3, Anglais, - black%2Dbody%20calibration

Fiche 3,  Justifications,  Français

Record number: 3, Textual support number: 1 CONT

L'utilisation faite par l'ATSR [le radiomètre à balayage dans le sens de la trace] des longueurs d’onde de l'infrarouge permet d’obtenir des précisions supérieures à ce qu'offraient les instruments similaires précédemment embarqués sur satellite, grâce à la technique du balayage conique et à l'utilisation de sources améliorées pour l'étalonnage sur corps noir.  3, fiche 3, Français, - %C3%A9talonnage%20sur%20corps%20noir

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étalonnage sur corps noir : terme uniformisé par le Comité d’uniformisation de la terminologie spatiale (CUTS).  4, fiche 3, Français, - %C3%A9talonnage%20sur%20corps%20noir

Fiche 3,  Justifications,  Espagnol