可调背景的星敏感器性能测试系统设计  

Design of Performance Test System for Star Sensor with Adjustable Background

作　　者：杨松洲 张国玉[1,2,3] 孙高飞 刘石[1,2,3] 徐达 Yang Songzhou;Zhang Guoyu;Sun Gaofei;Liu Shi;Xu Da(College of Optoelectronic Engineering,Changchun University of Science and Technology,Changchun 130022,Jilin,China;Key Laboratory of Optoelectronic Measurement and Optical Information Transmission Technology of Ministry of Education,Changchun 130022,Jilin,China;Jilin Engineering Research Center of Photoelectric Measurement and Control Instruments,Changchun 130022,Jilin,China)

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

出　　处：《激光与光电子学进展》2022年第23期239-247,共9页Laser & Optoelectronics Progress

基　　金：国家自然科学基金(62075019)。

摘　　要：为解决现有星模拟器无法模拟天空背景变化的问题,提出了一种用于测试星敏感器工作性能的背景可调星模拟器。设计了离轴反射式准直光学系统,通过在主光路中引入半反半透镜产生两个共轭焦面,星点分划板和杂光光阑分别由恒星光源模拟器和背景光源模拟器中的两个积分球照亮。实时监测积分球出口辐照度并根据星点和背景亮度的需要控制光源的输出功率。两路光束合束后准直成像为平行光,最终被星敏感器接收,从而实现具有可变星空背景且视星等可变的恒星模拟。测试结果表明,该系统的视星等在-2.00~6.00范围内连续可调,视星等模拟精度为0.30,背景光源均匀性达到97.3%。该系统可较好地模拟星敏感器运行时恒星的背景变化,有效提升星敏感器的性能测试精度。In this paper,in order to solve the problem that the existing star simulators cannot simulate the sky background change,a star simulator with variable background is proposed to test the performance of the star sensor.Off-axis reflection collimating optical system is designed,by introducing a semi-inverse semi-lens in the main optical path to produce two conjugate focal planes,the star-point reticule and the stray diaphragm are illuminated by two integrating spheres in the stellar source simulator and the background source simulator,respectively.Real-time monitoring of the irradiance at the outlet of the integrating sphere,and the output power of the light source can be controlled according to the needs of star and background brightness.After the two beams merge,they become parallel light through the collimating optical system and are finally received by the star sensor,thus realizing the simulation of stars with variable starry sky background and apparent magnitude.The test results show that the apparent magnitude of the system can be adjusted continuously from-2.00-6.00,the apparent magnitude simulation accuracy is 0.30,and the uniformity of the background light source is97.3%.The system can well simulate the background changes of stars when the star sensor is running,and can effectively improve the performance test accuracy of the star sensor.

关 键 词：光学设计 星模拟器 恒星模拟 背景模拟 星敏感器 

分 类 号：V416.8[航空宇航科学与技术—航空宇航推进理论与工程]