轻型全天时星敏感器光学系统设计  

Design of Optical System for Lightweight All-day Star Sensor

作　　者：陈博帆 薛要克[1,2,3,4] 沈阳 叶水福[1,4] 王虎 解永杰 CHEN Bofan;XUE Yaoke;SHEN Yang;YE Shuifu;WANG Hu;XIE Yongjie(Xi′an Institute of Optics and Precision Mechanics,Chinese Academy of Sciences,Xi′an 710119,China;University of Chinese Academy of Sciences,Beijing 100049,China;Youth Innovation Promotion Association CAS,Beijing 100029,China;Xi′an Space Sensor Optical Technology Engineering Research Center,Xi′an 710119,China)

机构地区：[1]中国科学院西安光学精密机械研究所空间光学技术研究室,西安710119 [2]中国科学院大学,北京100049 [3]中国科学院青年创新促进会,北京100029 [4]西安市空间敏感器光学技术工程研究中心,西安710119

出　　处：《光子学报》2024年第12期56-67,共12页Acta Photonica Sinica

基　　金：国家重点研发计划(No.2021YFC2202100)。

摘　　要：采用微晶结构铝合金轻质材料作为主镜、次镜、支撑结构,设计了一种轻型全天时无热化星敏感器光学系统,焦距450 mm,有效入瞳孔径80 mm,视场角2ω=3.6°,工作谱段0.8~1.1μm,在-20~55℃温度范围内拥有优良的温度适应性。对遮光罩进行设计,使太阳抑制角30°以外范围系统点源透过率优于10^(-6),满足高杂散光抑制比需求。在保证成像质量的情况下满足了系统轻量化需求,为实现工作于临近空间的全天时星敏感器光学技术发展提供了有力支撑。Astronomical navigation is a navigation method which obtains attitude information of the installation platform by detecting the relative positions of stars in space.It has the significant advantages of strong anti-interference ability,high measurement accuracy,and no accumulation of errors over time,and has been widely applied.As an important device in astronomical navigation,star sensor is used to measure the relative attitude information of carrier.It uses stars as reference sources to calculate the precise attitude information of carrier by comparing with the star maps.Unlike GPS navigation signal,which is prone to rejection and accumulates inertial navigation errors over time,star sensor has several advantages,such as high precision attitude measurement ability,autonomous working ability,stable passive measurement working mode,and anti-electromagnetic interference ability.It has become one of the most necessary devices for attitude and orbit control systems on platforms such as ships,aircrafts,and satellites.Star sensor navigation technology was first applied to satellite platforms outside the atmosphere,and the dark background in outer space has a relatively small impact on the recognition of dark star targets.In recent years,with the development of all-day star sensor optical technology,astronomical/inertial integrated navigation technology has been rapidly applied to airborne platforms and near-space aircraft platforms in the atmosphere.The working altitude in the near space of 20~100 km has attracted more and more attention,and under the daytime conditions in the atmosphere,strong sky background noise caused by atmospheric scattering in the near space leads to the submergence of dark star signals.Meanwhile,the platform working in near space has strict limitations on the volume,weight,working environment,and stray light suppression ability of the system,which puts high requirements on the design of optical system for the star sensor that works in the near space.The domestic all-day star sensor optical syst

关 键 词：光学设计 全天时星敏感器 杂散光抑制 全铝结构 无热化设计 

分 类 号：O435.1[机械工程—光学工程]