Optical system design of space-based detection camera of space debris

被引：0
|
作者：
Tong J. [1 ]
Zhang H. [1 ]
Wu J. [1 ]
机构：
[1] Beijing Institute of Space Mechanics & Electricity, Beijing
来源：
| 2016年 / Chinese Society of Astronautics卷 / 45期
关键词：
Optical design; Space-based detection; Stray light analysis;
D O I：
10.3788/IRLA201645.S229004
中图分类号：
学科分类号：
摘要：
The way and characteristics of space debris detection was analyzed. Based on the discussion of the requirements of space-based optical detection system, the system's technical specifications were presented. The detection of brightness higher than sixth-magnitude stars target was achieved, the target positioning precision could reach 3.5″. Through the analysis, the influence of stray light which produced of the strong light source in the field of view was controlled in the design process, and the performance of the bright and dark objects could be observed simultaneously. Technical specifications of optical system were: 82 mm effective focal length; 70 mm pupil diameter; 10°×10° field of view; under the condition of 450-900 nm wavelength range, 2600-9800 K color temperature range, the deviation of energy centre is better than 3 μm in the field of view of 0.85, the deviation of energy centre between the various temperature color is better than 1 μm, meanwhile, spot diagram energy concentration is greater than 75% in the 2×2 pixel and the spot diagram energy concentration is not less than 90% in the 3×3 pixel. The requirements of dark targets observation can be met by the sun to suppress the angle is greater than 50°, and the PST is not higher than 10-8 which are indicated by the simulation and analysis with the design of baffles and camera lens structures. © 2016, Editorial Board of Journal of Infrared and Laser Engineering. All right reserved.
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页数：8
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