弱光单星模拟器的设计与标定

发布时间：2018-01-11 12:24

本文关键词：弱光单星模拟器的设计与标定　出处：《光学学报》2017年10期 　论文类型：期刊论文

【摘要】：针对实验室高星等目标模拟问题,设计了一种由光源、可调光阑、积分球、光电探测器和平行光管组成的弱光单星模拟器,用于检测探测相机、星敏感器的星等探测能力。推导了光电探测器读数、积分球出口光谱辐亮度随可调光阑遮拦比的变化关系,结合星等定义公式和像面照度公式,介绍了弱光单星模拟器的工作原理,解决了高星等目标的标定难题。理论分析了弱光单星模拟器的星等模拟范围及精度,结果表明其最高可模拟19.5 Mv星等,精度为11.6%;模拟低于15 Mv星等时,精度优于8%。实验结果表明:实验室内,模拟星等与KLL-04型弱光照度计实测星等的相对误差最大为7.09%;实验室的探测相机与天文观测的探测相机所测得的星等探测能力在6.5Mv处的相对误差为1.9%,在15.2Mv处的相对误差为2.6%。所设计弱光单星模拟器能够对高星等目标进行有效模拟。
[Abstract]:Aiming at the problem of high star target simulation in laboratory, a low light single star simulator composed of light source, adjustable aperture, integral sphere, photodetector and parallel light tube is designed, which can be used to detect detection camera. The relationship between the spectral radiance of the photodetector and the spectral radiance of the integral sphere with the adjustable aperture ratio is derived, combining with the star magnitude definition formula and the image plane illuminance formula. The working principle of weak light single star simulator is introduced, and the calibration problem of high star target is solved. The simulation range and precision of low light single star simulator are analyzed theoretically. The results show that the maximum magnitude of 19.5 Mv can be simulated, and the precision is 11.6mm. The experimental results show that the relative error between the simulated magnitude and the measured magnitude of the KLL-04 type weak illumination meter is 7.09 in the laboratory. The relative error between the detection camera of laboratory and that of astronomical observation is 1.9% in the range of 6.5 Mv. The relative error at 15.2Mv is 2.60.The low light single star simulator is designed to simulate the high star target effectively.
【作者单位】：中国科学院西安光学精密机械研究所;中国科学院大学;
【分类号】：O439
【正文快照】： 2中国科学院大学,北京100049星模拟器常用于模拟探测相机、星敏感器等光学系统所探测的目标,能够模拟目标的照度、光谱等指标,1012001-1可用于检测探测能力等关键指标。现代探测相机的典型目标为大气外反射太阳光的敌方卫星和导弹等被动目标[1],此类目标受太阳高度角、目标反

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