VEGETATION - 2000
Lake
Maggiore - Italy, 3-6 April 2000
Calibration
of VEGETATION cameras on-board SPOT4
Patrice
Henry, Aimé Meygret
CNES (Centre National d'Etudes Spatiales)
18 avenue Edouard Belin
31401 TOULOUSE CEDEX 4 - FRANCE
Tel: 33 (0)5 61 27 47 12, Fax: 33 (0)5 61 27 31 67
E.mail:Patrice.Henry@cnes.fr
Paper
(pdf file, 45 k)
"VEGETATION: In-flight Multi-angular
Calibration", Bertrand Fougnie, Patrice Henry, Francois Cabot, Aimé Meygret,
and Marie-Christine Laubies, AM4135-53, SPIE's 45th Annual Meeting, The
International Symposium on Optical Science and Technology, 30 July - 4
August, San Diego, California, 2000.(pdf file : 695k)
This
paper presents the results of the VEGETATION radiometric calibration obtained
with different methods based on experience with SPOT and POLDER in:
- pre-launch measurements
- onboard calibration
systems
- vicarious calibration
over test sites
- calibration over
molecular scattering
- calibration over
sun glint
- calibration over
clouds
- VEGETATION/HRVIR
inter-calibration.
The
accuracy of these measurements is discussed. The measurements are combined
in a model which gives the cameras sensitivity as a function of time for
the ground processing algorithms. |
