An interferometric sensor for satellite drag-free control
An interferometric sensor for satellite drag-free control
复制标题
用于卫星无拖曳控制的干涉传感器
DOI：
10.1088/0264-9381/22/10/019
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发表时间：
2005
影响因子：
3.5
通讯作者：
S. Aston
中科院分区：
文献类型：
--
作者：
C. Speake;S. Aston
我们描述了伯明翰大学正在开发的一种紧凑型干涉仪，它可以用作无拖曳卫星的零刚度传感器。讨论了一种基于台式偏振的纯差干涉仪的原型，该干涉仪在60hz以上实现了3 × 10−12 m Hz1/2的短噪声限制位移灵敏度。我们讨论了一种波长调制技术，它将使干涉仪更加稳健，因为它可以确定干涉仪臂长的绝对差异。
We describe a compact interferometer, under development at the University of Birmingham, that could be employed as a zero-stiffness sensor for drag-free satellites. A prototype bench-top polarization-based homodyne interferometer is discussed that achieves a shot-noise limited displacement sensitivity of 3 × 10−12 m Hz1/2 above 60 Hz. We discuss a wavelength modulation technique that will render the interferometer more robust as it enables the absolute difference in interferometric armlengths to be determined.