Computer Science – Performance
Scientific paper
May 1997
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997adspr..19.1335t&link_type=abstract
Advances in Space Research, Volume 19, Issue 9, p. 1335-1343.
Computer Science
Performance
3
Scientific paper
The first flight model of SCARAB (SCAnner for RAdiation Budget), has been launched in February 94. Due to failures of on-board lamps just after the launch, the in-flight calibration strategy has been changed during the mission. Thanks to this new method, one year of data has been collected. This alternate method of calibration is so performant that it will become the main in-flight calibration strategy for the next model (that will be launched during the second trimester of 97). In this paper is firstly explained the original in-flight calibration method planned to fulfill the mission. The behaviour of the calibration module after the launch is analysed and a diagnosis of the failures is set. A synthesis of remaining resourses is made up. Ascertaining that some parameters are very stable during all the mission, the new calibration strategy is built. This method is based on the accuracy of the law linking gains to the temperature of the instrument, and also on the very high reliability of the on-board black body simulators. Performances of both methods are compared. Points to strengthen for the future model are also raised.
Dinguirard Magdeleine
Trémas Thierry
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