| Autor: |
Rosak, Alain, Tremas, Thierry, Karouche, Nadia, Gillot, Laurene, Simonella, Olivier |
| Zdroj: |
2012 IEEE International Geoscience & Remote Sensing Symposium; 1/ 1/2012, p4746-4749, 4p |
| Abstrakt: |
The Scarab-3 instrument, part of the Indian-French Megha-Tropiques mission [1], has been launched in october 2011. It is a radiometer dedicated to earth radiation budget. CNES is prime of the development of this instrument. Last year, CNES conducted the final integration of the instrument and the radiometric/geometric calibrations. Two main spectral bands are measured by this instrument: A shortwave (SW) channel dedicated to solar fluxes and a Total (T) channel for (total) fluxes combining the infra-red earth radiance and the albedo. The earth long wave (LW) radiance is computed by subtracting the SW channel to the Total channel. Thus is defined a 3rd (virtual) LW channel. To obtain a good radiometric accuracy, intensive tests have been conducted using integrating sphere, black body calibration, vacuum tests and collimator test. After a brief sum up of the instrument, the results of the calibration will be presented and compared with the first in orbit calibration. [ABSTRACT FROM PUBLISHER] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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