光学精密工程2025，Vol.33Issue(9)：1353-1364,12.DOI:10.37188/OPE.20253309.1353
拼接式空间望远镜大范围高精度自动化共相调校
Automated co-phasing alignment for large-scale high-precision in segmented space telescopes
摘要
Abstract
This paper presents a method for large-range,high-precision,and automated co-phasing alignment of segmented space telescopes.The approach satisfies the demands of millimeter-level range,nanometer-level precision,and operation without reliance on external interferometric measurement de-vices.Initially,the optical characteristics at various co-phasing stages-confocal alignment,coarse co-phasing,and fine co-phasing-are analyzed.Enhancements are made to the confocal alignment method,a coarse co-phasing detection technique based on a dispersion fringe sensor is developed,and a fine co-phasing detection method employing phase diversity is introduced.These advancements establish a com-prehensive accuracy convergence chain for segmented mirror co-phasing alignment.Subsequently,an experimental system is constructed to validate the automated processes of confocal alignment,coarse co-phasing,and fine co-phasing.Experimental results demonstrate that when the relative position and ori-entation errors of sub-mirrors lie within±0.5 mm and±0.1°,respectively,the proposed method suc-cessfully achieves automated co-phasing.Following co-phasing,the system attains a wavefront error RMS better than 0.1λ(λ=632.8 nm).The proposed co-phasing method provides a broad alignment range,high accuracy,and low resource consumption,rendering it highly promising for applications in segmented space telescopes.关键词
空间望远镜/拼接镜/共相调校/色散条纹/位相相异Key words
space telescope/segmented mirror/co-phasing alignment/dispersed fringe sensor/phase di-versity分类
机械制造引用本文复制引用
许博谦,鞠国浩,高雁,王帅会,张春悦,匡也,杜一民,鹿芝荣,徐抒岩..拼接式空间望远镜大范围高精度自动化共相调校[J].光学精密工程,2025,33(9):1353-1364,12.基金项目
国家重点研发计划资助项目(No.2016YFE0205000) （No.2016YFE0205000）
