GRAIL — A microwave ranging instrument to map out the lunar gravity field
GRAIL — A microwave ranging instrument to map out the lunar gravity field
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GRAIL — 用于绘制月球重力场的微波测距仪
DOI：
10.1109/freq.2010.5556264
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发表时间：
2010
期刊：
影响因子：
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通讯作者：
W. Klipstein
中科院分区：
文献类型：
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作者：
D. Enzer;Rabi T. Wang;W. Klipstein
重力恢复和内部实验室，简称GRAIL，是美国宇航局的一项任务，旨在以前所未有的详细程度绘制月球重力场。这次任务的仪器是基于GRACE（重力恢复和气候实验），这是一个地球轨道任务，目前正在绘制地球重力场。本文将描述这两种仪器之间的异同，重点介绍用于确定重力参数的微波测距测量以及在喷气推进实验室建立的用于演示微米级测距能力的试验台。将描述机载超稳定振荡器和射频仪器，并讨论噪声的贡献。
Gravity Recovery and Interior Laboratory, or GRAIL, is a NASA mission to map out the gravity field of the moon to an unprecedented level of detail. The instrument for this mission is based on GRACE (Gravity Recovery and Climate Experiment), an earth-orbiting mission currently mapping out the gravity field of the earth. This paper will describe the similarities and differences between these two instruments with a focus on the microwave ranging measurements used to determine the gravity parameters and the testbed built at Jet Propulsion Laboratory to demonstrate micron level ranging capability. The onboard ultrastable oscillator and RF instruments will be described and noise contributions discussed.