Optical system design and stray light suppression for medium-high orbit autonomous navigation system based on stellar refraction

被引：0
作者：
Li H.-F. [1 ]
Li Z. [2 ]
Lin Q. [2 ]
机构：
[1] Beijing Institute of Spacecraft System Engineering, Beijing
[2] Qian Xuesen Laboratory of Space Technology, China Academy of Space Technology, Beijing
来源：
Guangxue Jingmi Gongcheng/Optics and Precision Engineering | 2017年 / 25卷 / 08期
关键词：
Autonomous navigation; Internally occulting sensor; Navigation by stellar refraction; Optical system design; Stray light suppression;
D O I：
10.3788/OPE.20172508.1995
中图分类号：
学科分类号：
摘要：
In order to realize full-time-running and high-precision stellar refraction autonomous navigation of medium-high orbit satellites based on single star sensor with wide field of view, and to fix the suppression problem of strong stray light lead by illuminated earth in field of view, an internally occulting stellar refraction sensor and its stray light suppression were researched. Through the establishment of the model of stellar refraction sensor and the simulation test environment of stellar refraction navigation, the intensities of stray light for each level were determined by simulation analysis and numerical calculation, thus presenting the scheme for stray light suppression accordingly. The simulation results show that the internally occulting stellar refraction sensor with re-imaging optical system can suppress the stray light to the acceptable maximum capacity of the autonomous navigation system. The acceptable maximum capacity of stray light suppression is 1.1×10-3 in the field of 1.003Re (Re is the earth radius), which means that the stray light in the field of 1.003Re should be suppressed under 1.1×10-3 of the average luminance value of the illuminated earth. Moreover, an field experiment for observing the stars with the moon in the field of view by the prototype of the stellar refraction sensor were performed. The results show that the methods for the stray light suppression and the intensity calculation of the stray light are effective and feasible, which lay a good foundation for the application of the stellar refraction autonomous navigation method for medium-high orbit satellites based on single star sensor with wide field of view. © 2017, Science Press. All right reserved.
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页码：1995 / 2003
页数：8
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