摘要
为实现星光定向仪地面标定工作,同时满足辐射均匀性、特定辐照度和光谱三项模拟要求,提出了特定辐照度下均匀辐射的红外星模拟器光学系统设计方案。根据辐照度模拟要求和均匀辐照要求,建立光源系统辐通量传递模型,设计了满足辐射光谱要求的均匀辐射光源系统。结合星光定向仪和红外星模拟器的对接要求,设计了具有高成像质量的透射式准直光学系统。结合设计结果,利用Tracepro软件对光学系统进行建模,仿真分析光源系统辐射面和光学系统出口处的辐照度和辐照均匀性,并利用辐照计对光源辐射面辐照度和均匀性进行实验测试,验证理论分析的准确性。实测结果表明,光源辐射面的辐照度达到指标要求,辐照不均匀度为2.75%,满足红外星模拟器研制要求。
As the key equipment of the starlight navigation system,the starlight direction finder is mainly used to obtain the accurate spatial angular position of natural stars,which is used for high-precision attitude calculation and navigation and positioning of missiles,ships and space satellites. Its performance largely determines the performance of the starlight navigation system. In the visible light band,the starlight direction finder is easily affected by the background radiation generated by the sun scattering in the atmosphere. According to Rayleigh scattering theory,the infrared band has a smaller scattering intensity than the visible light band,and the radiation energy transmitted through the atmosphere is strong. Practice shows that it is much more efficient to use the near-infrared band to measure stars in daytime than the visible light band to realize navigation and positioning. Therefore,developing high-precision infrared star simulator and realizing infrared star map simulation has become a new content to improve the efficiency of starlight navigation and the accuracy of star point detection. In order to realize the ground calibration of starlight director and meet the three simulation requirements of radiation uniformity,specific irradiance and spectrum,this paper proposes an optical system design scheme of infrared star simulator with uniform radiation under specific irradiance. According to the requirements of irradiance simulation and uniform irradiation,the radiation flux transfer model of light source system is established,and a uniform radiation light source system is designed to meet the requirements of radiation spectrum. According to the docking requirements of starlight direction finder and infrared star simulator,a transmission collimating optical system with high imaging quality is designed. Combined with the design results,Tracepro software is used to model the optical system,and the irradiance and uniformity of the radiation surface of the light source system and the exit of the optical system are simulated and analyzed. The irradiance and uniformity of the radiation surface of the light source are tested experimentally with an irradiance meter to verify the accuracy of the theoretical analysis. The measured results show that the irradiance of the radiation surface of the light source meets the index requirements, and the irradiance unevenness is 2.75%, which meets the development requirements of the infrared star simulator.
作者
郑茹
李长余
高越
李光茜
刘博
孙阔
ZHENG Ru;LI Changyu;GAO Yue;LI Guangxi;LIU Bo;SUN Kuo(College of Opto-electrical Engineering,Changchun University of Science and Technology,Changchun 130022,China;Science and Technology High-precision Photoelectric Measurements Industry Technology Research and Development Center of Changchun City,Changchun 130022,China;Changchun Railway Vehicles Co.,LTD.,Changchun 130062,China)
出处
《光子学报》
EI
CAS
CSCD
北大核心
2022年第4期16-24,共9页
Acta Photonica Sinica
基金
吉林省科技厅项目(No.20210201033GX)。
