摘要
在星敏感器高精度的地面精确标定任务中,为满足其对高精度大视场多星模拟器的需求,研制了可实现20°×40°视场内65颗恒星位置、星等精确模拟的高精度星模拟器。文章从星模拟器原理出发,基于星模拟器空间坐标系转换设计了模拟星支架,通过分析影响模拟星指向的误差,采用“主次镜一体式安装”、“全铝式模拟星系统”、“星孔位置补偿”等关键技术,设计高精度模拟星系统;建立各模拟星在o-x′y′z′坐标系中的空间位置模型,推导出各模拟星俯仰偏摆角度、单星指向及星间角距数学模型,并计算出单星指向理论误差及星角距理论误差,作为装调及试验的理论基础。试验结果显示,所有模拟星单星指向误差均优于1.914″,任意两模拟星角距误差优于4.3″;设计的高精度大视场多星模拟器精度满足要求,解决了新型星敏感器对高精度大视场多星模拟器的需求,可以作为高精度星敏感器地面性能标定的重要设备。
In order to achieve high-precision ground calibration of star sensors and meet the needs of a highprecision multi-star simulator with a wide field of view,a high-precision star simulator which can accurately simulate the position and magnitude of 65 stars in the 20°×40°field of view was developed.Based on the principles of star simulators and the transformation of the space coordinate systems of star simulators,a simulation star bracket was designed.By the analysis and calculation of errors that affect the pointing error of star simulations,the high-precision simulation star system was designed using key technologies such as"integrated installation of primary and secondary mirrors","all-aluminum simulation star systems"and"star point position compensation".A space-position model of each simulation star in the o-x'y'z'coordinate system was established,and the mathematical models of pitch,yaw,single star direction and star angular distance were derived.Also,the theoretical errors in single-star direction and star angular distance,which were used as the theoretical basis for adjustment and testing,were calculated.The single-star direction error of all simulated stars was better than 1.914",and the angular distance error of any two simulated stars was better than 4.3".The accuracy of the designed high-precision wide-field-of-view multi-star simulator meets the requirements.It can be used as an important piece of equipment for ground calibration of high-precision star sensors.
作者
许洪刚
韩冰
李曼丽
马洪涛
张鹏宇
鞠德晗
XU Hong-gang;HAN Bing;LI Man-li;MA Hong-tao;ZHANG Peng-yu;JU De-han(Changchun Institute of Optics,Fine Mechanics and Physics,Chinese Academy of Sciences,Changchun 130033,China)
出处
《中国光学》
EI
CAS
CSCD
北大核心
2020年第6期1343-1351,共9页
Chinese Optics
关键词
星模拟器
高精度
大视场
全铝式
单星指向
星间角距
star simulator
high precision
wide field of view
all aluminum
single star pointing
star angular distance
