Super typhoon Haiyan makes landfall
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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
Tel: 33 (0)5 61 27 47 12, Fax: 33 (0)5 61 27 31 67

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.