Titel: CHAMP Attitude Aberration Correction
Autoren: R. Bock , H. Lühr
Doc.no.: CH-GFZ-TN-2702
Issue: 1.1
Date: 30. Apr. 2001
Format: PDF (670 kB)


Scope / Abstract
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The CHAMP Advanced Stellar Compass ASC is capable of performing
in-flight aberration correction. Full functionality became operational
in February 2001. Before that, during the CHAMP instrument commissioning
phase, the autonomous aberration correction was not enabled.
Post-processing ASC data from the first months of the mission thus
requires to consider the aberration effect.
In chapter 3 an overview of the effect is given. The annual and orbital
aberration are explained and basic formulas are given.
In chapter 4 the mathematical framework and a possible method to compute
and apply the corrections is given.
Finally in chapter 5 the initial results from in-flight aberration
correction performed after full functionality, as have been reached, are
presented.