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From Mercury to Pluto: A Common Approach to Mission Timekeeping

机译:从水星到冥王星:一种常见的任务计时方法

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The successful launch of the New Horizons spacecraft for a rendezvous with Pluto and Charon and the continuing progress of the MESSENGER spacecraft toward Mercury now positions mankind to unlock mysteries of our solar system from Mercury to Pluto and beyond. Both missions, though very different in concept, use the same generic timekeeping system design. This paper explores how we maintain time on these spacecraft and how we establish on the ground the correlation between spacecraft time and Earth time. It further reviews the sub-millisecond correlation accuracy that has been demonstrated for the MESSENGER mission and the time accuracy we expect to achieve for that mission at Mercury and for the New Horizons mission at Pluto-Charon
机译:“新视野”号飞船与冥王星和“夏隆”的会合成功发射,以及“信使号”飞船向水星方向的持续发展,使人类得以释放从水星到冥王星以及更远范围的太阳系的奥秘。这两个任务虽然在概念上有很大不同,但它们使用相同的通用计时系统设计。本文探讨了如何在这些航天器上维持时间,以及如何在地面上建立航天器时间与地球时间之间的相关性。它进一步审查了已为MESSENGER任务证明的亚毫秒相关精度,以及我们期望在Mercury的任务和Pluto-Charon的New Horizo​​ns任务中实现的时间精度。

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