基于LCOS拼接的高精度高动态星模拟器设计

发布时间：2018-03-14 00:27

本文选题：LCOS拼接结构　切入点：星间角距误差修正方法　出处：《吉林大学学报(工学版)》2016年02期 　论文类型：期刊论文

【摘要】：为了满足基于硅基液晶(LCOS)拼接的动态星模拟高精度与高动态的要求,对传统的拼接方法及修正方法进行了提升与优化。提出了将拼接系统的一块偏振分光棱镜(PBS)拆分为三块PBS的方法进行光学拼接。针对新的拼接结构,设计了长出瞳距,低畸变、消色差目镜系统,并进行了像质评价。重点阐述了像差对动态星模拟器星点位置的影响,详细论述了一种基于星模拟器光学系统位置像差的修正方法。结果表明:光学系统在12°×12°的视场范围内,相对畸变小于0.035%,且在奈奎斯特频率为v=60lp/mm时,全视场的MTF不小于0.8。新的拼接结构提高了两片LCOS显示对比度的一致性,加强了动态星模拟器在星敏感器动态测试中的可识别率。新的修正方法提高了星图的显示精度,经测试其星间角距误差小于7″,符合设计要求。
[Abstract]:In order to meet the requirements of high precision and high dynamic simulation of dynamic stars based on silicon based liquid crystal crystal (LCOS) splicing, The traditional splicing method and the correction method are improved and optimized. A method of splitting a polarizing prism into three blocks of PBS is proposed for optical splicing. For the new splicing structure, a new splicing structure is designed, which has long pupil distance and low distortion. The achromatic eyepiece system and image quality evaluation are carried out. The influence of aberration on star position of dynamic star simulator is expounded. A correction method of position aberration based on satellite simulator optical system is discussed in detail. The results show that the relative distortion of the optical system is less than 0.035 in the range of 12 掳脳 12 掳, and when the Nyquist frequency is 60 lp / m, The MTF of the whole field of view is not less than 0.8. The new splicing structure improves the consistency of the contrast of the two pieces of LCOS display, and strengthens the recognition rate of the dynamic star simulator in the dynamic test of the star sensor. The new correction method improves the display accuracy of the star map. The error of angle distance between satellites is less than 7 ", which meets the design requirements.
【作者单位】：长春理工大学光电工程学院;吉林省光电测控仪器工程技术研究中心;
【基金】：“863”国家高技术研究发展计划项目(2008AA12A203)
【分类号】：V416.8

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