相关实验视频
Updated: Jul 16, 2025

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Bringing the Visible Universe into Focus with Robo-AO
Published on: February 12, 2013
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激光通信中继演示地面站1的自适应光学系统的性能
Applied optics
|September 14, 2023
概括
美国国家航空航天局NASA NASA
科学领域:
- 光学工程是指光学工程.
- 空间通讯 空间通讯
- 适应光学适应光学
背景情况:
- 激光通信中继演示 (LCRD) 旨在展示地球到地球同步卫星激光通信.
- 加利福尼亚和夏威夷的两个光学地面站 (OGS) 支持这项任务.
- 每个OGS都有一个高阶的自适应光学 (AO) 系统来弥补大气流.
研究的目的:
- 详细介绍OGS1自适应光学系统的硬件和软件设计.
- 解释控制系统和减少非常见路径偏差的方法.
- 为LCRD任务提供测量系统性能数据.
主要方法:
- 使用双变形镜系统来纠正低频和高频空间偏差.
- 采用Shack-Hartmann波面传感器进行实时流传感.
- 实现了一个实时控制系统,能够以20kHz的率运行.
主要成果:
- 在单模式光纤中实现了50%的合效率所需的高阶自适应光学性能.
- 证明有效补偿大气流对下行激光束产生影响.
- 通过测量数据在压力条件下验证系统性能.
结论:
- 开发的高级AO系统符合激光通信中继器的严格要求.
- 实时控制系统可以实现高率,这对任务成功至关重要.
- LCRD任务的OGS展示了基于太空的光通信的先进能力.
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