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Conceptual design of the pointing and control subsystem of the space infrared telescope facility

机译:空间红外望远镜设施指向和控制子系统的概念设计

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Abstract: The Space Infrared Telescope Facility mission provides exciting pointing and control challenges. This paper describes the pointing and control subsystem (PCS) designed to meet these challenges. Cost, mass, performance, and life-time drove the choice of the new solar orbit and the re-design of the telescope, spacecraft, and the pointing and control subsystem. The PCS performs a number of key functions for the observatory, including pointing to and holding inertial targets, tracking moving targets, performing prescribed motion patterns, maintaining pointing constraints and providing safe hold during failure. To attain the high precision demanded by the observatory, the PCS relies on a sub-arcsecond star tracker and a 0.001 arcsecond resolution inertial reference unit. An affordable PCS is realized by locating the fine guidance sensor externally, utilizing a simple fault protection strategy, and maximizing the commonality in the use of hardware and in the development of flight software. !3
机译:摘要:太空红外望远镜设施任务提出了令人兴奋的指向和控制挑战。本文介绍了旨在解决这些挑战的指向和控制子系统(PCS)。成本,质量,性能和使用寿命推动了对新太阳轨道的选择,并推动了望远镜,航天器以及指向和控制子系统的重新设计。 PCS为天文台执行许多关键功能,包括指向并保持惯性目标,跟踪运动目标,执行规定的运动模式,维持指向约束并在故障期间提供安全保持。为了获得天文台所要求的高精度,PCS依靠亚弧星跟踪器和0.001弧秒分辨率的惯性参考单位。通过在外部定位精细制导传感器,采用简单的故障保护策略并最大程度地提高硬件使用和飞行软件开发的通用性,可以实现价格合理的PCS。 !3

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