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13 September 2012 Architecture impacts on planning and activity scheduling in external occulter missions
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Abstract
Architecture choices impact planning and scheduling of activity sequences for two widely separated spacecraft envisioned to be part of an astrophysics mission to observe extra-solar-planets. The two spacecraft consist of a large space telescope and an external occulter, separated by tens of thousands of kilometres. The science need is to maintain alignment at the tens of milliarcseconds level (~ metres) or less on given target stars after moving one of the spacecraft tens of thousands of kilometres. Doing this efficiently presents operational and architectural design challenges that rely on appropriate choice of navigation, propulsion, and alignment technologies, vehicle configuration, and activity scheduling strategies—an extensive combination of which may potentially be chosen from for such a mission. Challenges inherent in the general system architecture are described with emphasis on potential problems and the need for sound and appropriate integration of architecture planning, subsystem choice, and activity scheduling.
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I. J. E. Jordan "Architecture impacts on planning and activity scheduling in external occulter missions", Proc. SPIE 8450, Modern Technologies in Space- and Ground-based Telescopes and Instrumentation II, 84500L (13 September 2012); https://doi.org/10.1117/12.927142
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