Faulty actuator tolerance in deformable mirrors for Extremely Large Telescope multi-object adaptive optics
Faulty actuator tolerance in deformable mirrors for Extremely Large Telescope multi-object adaptive optics
复制标题
超大望远镜多目标自适应光学器件的可变形镜中执行器容差错误
DOI：
10.1093/mnras/stu315
复制
发表时间：
2014
影响因子：
4.8
通讯作者：
Basden A
中科院分区：
文献类型：
--
作者：
Basden A
计划在即将推出的超大望远镜上使用多目标自适应光学系统的仪器需要大量高阶可变形镜。这些设备是一个重要的成本驱动因素，特别是在有关故障执行器数量的规范非常严格的情况下。在这里，我们研究了此类有缺陷的执行器对自适应光学性能的影响，并得出了在不影响自适应光学性能的情况下可以在多大程度上放宽有缺陷的执行器规格（以及成本）的结论。我们还使用现有可变形镜的故障执行器图来提供性能估计。我们使用端到端蒙特卡罗自适应光学仿真代码研究了故障执行器的影响。我们发现，对于卡在可变形镜面上方固定高度的执行器，在性能显着下降之前，1% 到 2% 的执行器可能会出现故障。对于与最近邻居耦合的执行器，在自适应光学 (AO) 性能开始受到影响之前，最多大约 5% 的执行器可能会出现故障。
Planned instruments utilizing multi-object adaptive optics systems on the forthcoming extremely large telescopes require large numbers of high order deformable mirrors. These devices are a significant cost driver, particularly if specifications regarding the number of faulty actuators are stringent. Here, we investigate the effect on adaptive optics performance that such faulty actuators have, and draw conclusions about how far faulty actuator specifications (and hence cost) can be relaxed without having a significant effect on adaptive optics performance. We also provide performance estimates using a map of faulty actuators from an existing deformable mirror. We investigate the effect of faulty actuators using an end-to-end Monte Carlo adaptive optics simulation code. We find that for actuators stuck at a fixed height above the deformable mirror surface, between 1 and 2 per cent of actuators can be faulty before significant performance degradation occurs. For actuators that are a coupled to nearest neighbours, up to about 5 per cent, can be faulty before adaptive optics (AO) performance begins to be affected.
达勒姆极大望远镜自适应光学模拟平台。
影响因子：
1.9
作者：
Basden A
通讯作者：
Basden A