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Showing 1 to 2 of 2 for “"Star camera"”.
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Analyzing and monitoring GRACE-FO star camera performance in a changing environment
… attitude determination sensors are the three star cameras on board each GRACE-FO satellite, and errors in their measurements stem from star tracker performance, on-ground measurement of the alignments between them and the spacecraft, and how stable that alignment is over the course of the …
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High-precision pointing and attitude estimation and control algorithms for hardware-constrained spacecraft
… to detect exoplanets around bright Sun-like stars via the transit method. To achieve the photometric precision necessary to detect Earth-sized exoplanets, a pointing precision on the arcsecond level must be achieved. This is an unprecedented level of pointing precision on a spacecraft of this …