摘要
星敏感器是航天器实现高精度测量的重要组成部分,其姿态测量精度和指向精度都可以精确到角秒级。星敏感器的灵敏度很高,外界因素容易影响星敏感器测量的精度,杂光对星敏感器高精度测量的影响程度最大。根据应用指标,进行了一种改进型卡塞格林光学系统的结构设计,并通过模拟仿真,对系统的消杂光结构进一步实现了优化设计。利用增加主遮光罩叶片外倾角度、设计消光螺纹、加遮光筒长度、加大遮光筒直径等方式,完善星敏感器光学级系统自身的消杂光能力。最后进行整个光机系统的杂散光仿真分析,验证优化设计后的星敏感器光机系统符合应用要求。
Star sensor is an important part of high precision measurement of spacecraft,and the measurement accuracy and pointing precision of star sensor can be accurate to the second stage. The sensitivity of star sensor is very high,and the external factors are easy to affect the accuracy of star sensor measurement,and the influence of stray light on the high precision measurement of star sensor is the most. According to the application of indicators,to a improved structure design of Cassegrain optical system,and through the simulation,the system of stray light structure to further optimize the design. Increasing the utilization of Lord hood blade camber angle, extinction design thread, with light shading barrel length,increase the shading cylinder diameter,improve star sensor＇s optical system level its stray light.Finally the stray light simulation of the whole optical system level analysis,show that the optimization design of star sensor opto mechanical system to meet application requirements.
出处
《长春理工大学学报（自然科学版）》
2016年第5期30-34,共5页
Journal of Changchun University of Science and Technology(Natural Science Edition)
