The attitude determination algorithm developed for the ISO (Infrared Space Observatory) spacecraft ground control, to be used for attitude initialization during Launch and Early Operations Phase (LEOP), and for any later attitude updates required during the mission, is described. The attitude determination task contains a star pattern recognition algorithm, using a star map generated by the spacecraft Star Tracker, and requires no a priori attitude estimates. Derivation of the algorithms for the attitude determination task is given. The practical implementation of the task within the overall ground control segment, where a workstation running Open Windows is employed, is described.
ISO Ground Attitude Determination During Operations
1991
6 pages
Report
No indication
English
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