一种基于数字微镜星模拟器的衍射校正方法  

A Diffraction Correction Method Based on Digital Mirror Device Star Simulator

作　　者：赵铎[1,3] 张国玉 徐达[1,2,3] 王立 孙高飞[1,2,3] 钟俊 梁士通[4] 吴凌昊[1,3] ZHAO Duo;ZHANG Guoyu;XU Da;WANG Li;SUN Gaofei;ZHONG Jun;LIANG Shitong;WU Linghao(College of Opto-electrical Engineering,Changchun University of Science and Technology,Changchun 130022,China;Jilin Engineering Research Centre of Photoelectric Measurement and Control Instruments,Changchun 130022,China;Key Laboratory of Optical Control and Optical Information Transmission Technology,Ministry of Education,Changchun 130022,China;Beijing Control Engineering Research Institute,Beijing 100190,China)

机构地区：[1]长春理工大学光电工程学院,长春130022 [2]吉林省光电测控仪器工程技术研究中心,长春130022 [3]光电测控与光信息传输技术教育部重点实验室,长春130022 [4]北京控制工程研究所,北京100190

出　　处：《光子学报》2021年第9期46-53,共8页Acta Photonica Sinica

基　　金：吉林省科技厅项目(No.20200401046GX)。

摘　　要：为解决星模拟器在光谱模拟时存在的衍射问题,提出一种消除数字微镜设备衍射效应的方法。建立标量衍射模型,将数字微镜设备等效为二维闪耀光栅,以光栅衍射理论为基础寻找影响衍射能级的因素,并推导出入射角与衍射效应的耦合关系。当光束沿数字微镜设备对角线入射,高度角为24°时,衍射效率达到最大化提高,衍射效率提高近12%,此时衍射损耗能量最少,数字微镜设备反射时存在衍射效应达到最小,通过ZEMAX优化设计出Czerny-Turner光学结构,校正系统像差。优化结果表明,在500~900 nm谱段内,光谱模拟精度优于5%,全谱段的光谱分辨率优于5 nm,可有效提升星敏感器地面标定精度。In order to solve the diffraction problem in the spectrum simulation of the star simulator,a method to eliminate the diffraction effect of the Digital Mirror Device(DMD)is proposed.A scalar diffraction model is established,and the DMD is equivalent to a two-dimensional blazed grating.Based on the grating diffraction theory,the factors affecting the diffraction energy level are searched for,and the coupling relationship between the incident angle and the diffraction effect is deduced.When the light beam is incident along the diagonal of the DMD and the height angle is equal to the angle of height,the diffraction efficiency is maximized,and the diffraction efficiency is increased by nearly 12%.At this time,the diffraction loss energy is the least,and the diffraction effect when the DMD reflects is minimized.Through ZEMAX Optimal design of Czerny-Turner optical structure to correct system aberrations.The optimization results show that the spectral simulation accuracy is better than 5%in the 500~900 nm spectral range,and the spectral resolution of the full spectral range is better than 5 nm,which can effectively improve the ground calibration accuracy of the star sensor.

关 键 词：星模拟器 衍射效应 光谱模拟 光学设计 Czerny-Turner结构 

分 类 号：V524.3[航空宇航科学与技术—人机与环境工程] TH744[机械工程—光学工程]