可控分段主镜与单共轭自适应光学系统的同时运行 第二部分——模拟运行
The Simultaneous Operation of a Controllable Segmented Primary Mirror and Single Conjugate Adaptive Optics System part 2 -- Simulated Operation
AI总结：
开发了利用AO波前传感器分离CSP相位的方法，通过Keck-II系统模拟与在轨数据验证，证明闭环运行中同时监测和控制CSP能显著提升AO系统性能。
摘要：
提升分段望远镜主镜的同相位水平存在科学与技术上的需求。我们开发了一种方法，利用自适应光学（AO）系统的波前传感器，将可控分段主镜（CSP）的相位与待由AO系统其余部分校正的残余相位像差分离开来。我们展示了Keck-II AO系统的模拟，其中我们使用金字塔波前传感器在低带宽闭环中同时控制CSP表面和单共轭AO系统，最终显著减少了主镜上的像差并提升了AO系统的性能。对Keck-II AO系统的在轨遥测数据分析验证了这些模拟，并表明在真实大气湍流存在的情况下能够对主镜相位进行精确测量。最终，这项工作表明在闭环运行中利用AO波前传感器同时监测和控制CSP是可行的，并且这样做可以显著提升AO系统的性能。
英文摘要：
There are scientific and technological needs to improve the co-phasing of the primary mirrors of segmented telescopes. We have developed a methodology for using the wavefront sensor of an adaptive optics (AO) system to disentangle the phase of a Controllable Segmented Primary mirror (CSP) from the residual phase aberrations to be corrected by the rest of the AO system. We show simulations of the Keck-II AO system where we simultaneously control the CSP surface and a single-conjugate AO system using a pyramid wavefront sensor in a low-bandwidth closed loop, resulting in significantly decreased aberrations on the primary and improvements in the performance of the AO system. Analysis of on-sky telemetry data from the Keck-II AO system validates these simulations and shows that accurate measurements of the primary phase can be made in the presence of real atmospheric turbulence. Ultimately, this work suggests that it is feasible to simultaneously monitor and control the CSP with an AO wavefront sensor while in closed-loop operation and that doing so may significantly improve the performance of the AO system.
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