AI 中文总结
本研究开发了光学测试平台TOTO，用于测试天基望远镜自主在轨对准算法，验证了SPGD粗对准加FDPR精对准可使卡塞格林望远镜达到衍射极限性能，为相关任务提供实验支撑。
AI 中文摘要
微型望远镜优化观测台（TOTO）是一个光学测试平台，旨在评估天基望远镜系统自主驱动对准算法的有效性。对于天基任务，望远镜在轨对准的主动控制有望放宽被动对准要求并减少地面验证活动。TOTO用于评估和验证两种主要对准算法——随机并行梯度下降（SPGD）和焦散相位检索（FDPR）的仿真工作。先前的仿真工作已证实，使用SPGD进行粗对准，再用焦散相位检索进行精对准，我们可在轨达到衍射极限性能。本文介绍了使用TOTO对卡塞格林望远镜自主对准算法的测试结果，同时报告了TOTO的当前状态，以及在采用单色光源模拟轴上点源的测试台上，SPGD和相位检索的初步结果。
英文摘要
The Tiny Observatory for Telescope Optimization (TOTO) is an optical testbed designed to evaluate the efficacy of autonomously driven alignment algorithms for space-based telescope systems. For space-based missions, active control of the telescope alignment on-orbit offers potential to relax passive alignment requirements and reduce on-ground verification activities. TOTO is used to evaluate and verify simulation work of two primary alignment algorithms, Stochastic Parallel Gradient Descent (SPGD) and focus-diverse phase retrieval (FDPR). Previous simulation work has confirmed that by using SPGD for coarse alignment followed by focus-diverse phase retrieval for fine alignment, we can reach diffraction-limited performance on-orbit. This paper presents the results of the autonomous alignment algorithm of a Cassegrain telescope using TOTO. We report the current status of TOTO as well as preliminary results from SPGD and phase retrieval on the testbed using monochromatic light source to simulate an on-axis point source.
Comments9 pages, 9 figures
