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Sensors 2008, 8(10), 6557-6565; doi:10.3390/s8106557

Pre-Launch Absolute Calibration of CCD/CBERS-2B Sensor

1,*  and 2
Received: 26 August 2008 / Revised: 25 September 2008 / Accepted: 21 October 2008 / Published: 23 October 2008
(This article belongs to the Section Remote Sensors)
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Pre-launch absolute calibration coefficients for the CCD/CBERS-2B sensor have been calculated from radiometric measurements performed in a satellite integration and test hall in the Chinese Academy of Space Technology (CAST) headquarters, located in Beijing, China. An illuminated integrating sphere was positioned in the test hall facilities to allow the CCD/CBERS-2B imagery of the entire sphere aperture. Calibration images were recorded and a relative calibration procedure adopted exclusively in Brazil was applied to equalize the detectors responses. Averages of digital numbers (DN) from these images were determined and correlated to their respective radiance levels in order to calculate the absolute calibration coefficients. It has been the first time these pre-launch absolute calibration coefficients have been calculated considering the Brazilian image processing criteria. Now it will be possible to compare them to those that will be calculated from vicarious calibration campaigns. This comparison will permit the CCD/CBERS-2B monitoring and the frequently data updating to the user community.
Keywords: Absolute calibration; CCD/CBERS-2B sensor; pre-launch calibration Absolute calibration; CCD/CBERS-2B sensor; pre-launch calibration
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Ponzoni, F.J.; Albuquerque, B.F.C. Pre-Launch Absolute Calibration of CCD/CBERS-2B Sensor. Sensors 2008, 8, 6557-6565.

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