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基于衍射光栅的高精度干涉星敏感器的理论分析

张淑芬 姜珊 董磊 王建立 吴娜 李文昊

张淑芬, 姜珊, 董磊, 王建立, 吴娜, 李文昊. 基于衍射光栅的高精度干涉星敏感器的理论分析[J]. 中国光学. doi: 10.37188/CO.2021-0051
引用本文: 张淑芬, 姜珊, 董磊, 王建立, 吴娜, 李文昊. 基于衍射光栅的高精度干涉星敏感器的理论分析[J]. 中国光学. doi: 10.37188/CO.2021-0051
ZHANG Shu-fen, JIANG Shan, DONG Lei, WANG Jian-li, WU Na, LI Wen-hao. High accuracy interferometric star tracker based on diffraction grating[J]. Chinese Optics. doi: 10.37188/CO.2021-0051
Citation: ZHANG Shu-fen, JIANG Shan, DONG Lei, WANG Jian-li, WU Na, LI Wen-hao. High accuracy interferometric star tracker based on diffraction grating[J]. Chinese Optics. doi: 10.37188/CO.2021-0051

基于衍射光栅的高精度干涉星敏感器的理论分析

doi: 10.37188/CO.2021-0051
基金项目: 科技部重点研发计划资助项目(No. 2018YFF01011000);国家自然基金资助项目(No. 61905244);广东省重点领域研发计划项目(No. 201913010144001);吉林省与中国科学院科技合作高技术产业化专项资金项目(No. 2020SYHZ0033)
详细信息
    作者简介:

    张淑芬(1996—),女,山东滨州人,硕士研究生,2018年于鲁东大学获得学士学位,主要从事星敏感器光学设计方面的研究。E-mail:zzsf1066@163.com

    李文昊(1980—),男,内蒙古赤峰人,博士,研究员,2002年于陕西科技大学获学士学位,2008年于中国科学院长春光学精密机械与物理研究所获博士学位,主要从事平面、凹面全息光栅的理论设计及制作工艺等方面的研究。E-mail:leewenho@163.com

High accuracy interferometric star tracker based on diffraction grating

Funds: National Key R&D Program of China (No. 2018YFF01011000); National Natural Science Foundation of China (NSFC) (No. 61905244); Research and development projectin key areas of Guangdong Province (No. 201913010144001); Special fund project of high-tech industrialization for science and technology cooperation between Jilin Province and Chinese Academy of Sciences (No. 2020SYHZ0033)
More Information
  • 摘要: 为克服传统星敏感器精度与视场、体积、质量等参数难以兼顾的问题,本文研究了一种基于衍射光栅的高精度干涉星敏感器结构。利用角谱理论,建立了星光入射角度与探测器上像点质心位置、像点能量之间的数学模型,确定了干涉星敏感器利用像点质心位置和相对能量分别进行粗定位和精定位的方法及粗精定位结合的方法,得出了干涉星敏感器单星测量角分辨率和光栅周期、两块光栅之间的距离及像点光强信号电子学细分倍数有关的结论。通过计算机进行仿真模拟,验证了干涉星敏感器精定位及粗精定位结合的可行性。在光栅周期50 μm,两块光栅距离50 mm,像点光强信号每变化一个周期采用1024倍电子学细分的情况下,单星测量角分辨率达0.1″,与传统星敏感器相比精度有效提高。
  • 图  1  基于一维光栅的干涉星敏感器光学系统结构图

    Figure  1.  Framework of interferometric star tracker optical system based on grating

    图  2  干涉星敏感器靶面坐标系x'O'y'和干涉星敏感器坐标系O-xyz

    Figure  2.  Target plane coordinate system x'O'y' of the interferometric star tracker and the interferometric star tracker coordinate system O-xyz

    图  3  视场内三颗星在干涉星敏感器上的成像

    Figure  3.  star pattern generated for three stars within the field of view

    图  4  像点光强随星光入射角θx变化曲线

    Figure  4.  curve charts of intensity of four spots changing with the incident angle θx

    图  5  φ随星光入射角θx的变化

    Figure  5.  line graph of φ changing with incident angle θx

    图  6  小角度下φ随星光入射角θx的变化

    Figure  6.  line graph of φ changing with the small incident angle θx

    图  7  单个星体在探测器上的星图

    Figure  7.  star pattern from one star on the detector

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  • 网络出版日期:  2021-06-21

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