Stray light suppression of star photoelectric detection system for space target in daytime

WANG Yi-fan; LI Ling-yin

doi:10.3788/OPE.20111912.2854

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Stray light suppression of star photoelectric detection system for space target in daytime

Article | 更新时间：2020-08-12

- Stray light suppression of star photoelectric detection system for space target in daytime
- Optics and Precision Engineering Vol. 19, Issue 12, Pages: 2854-2861(2011)
- 作者机构：
  
  1. 中国科学院长春光学精密机械与物理研究所,吉林长春,中国,130033
  2. 中国科学院研究生院北京,100039
- 作者简介：
- 基金信息：
- DOI：10.3788/OPE.20111912.2854
  CLC： TH703;TH743
- Received：27 October 2010，
  
  Revised：27 February 2011，
  
  Published Online：25 December 2011，
  
  Published：25 December 2011
- 稿件说明：
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王一凡, 李零印. 白天观测空间目标的恒星光电探测系统的杂散光抑制[J]. 光学精密工程, 2011,19(12): 2854-2861

WANG Yi-fan, LI Ling-yin. Stray light suppression of star photoelectric detection system for space target in daytime[J]. Editorial Office of Optics and Precision Engineering, 2011,19(12): 2854-2861
王一凡, 李零印. 白天观测空间目标的恒星光电探测系统的杂散光抑制[J]. 光学精密工程, 2011,19(12): 2854-2861 DOI： 10.3788/OPE.20111912.2854.

WANG Yi-fan, LI Ling-yin. Stray light suppression of star photoelectric detection system for space target in daytime[J]. Editorial Office of Optics and Precision Engineering, 2011,19(12): 2854-2861 DOI： 10.3788/OPE.20111912.2854.

摘要

从恒星光电探测系统的杂散光光源入手

分析了杂散光的产生和传输特性

建立了杂散光对恒星光电探测系统影响的评价指标

然后提出了合理抑制杂散光的方案

用于指导光机系统的结构设计。通过遮光罩、挡光环以及表面涂层处理技术来削弱杂散光对光机系统的影响

利用软件对该光机系统结构进行杂散光模拟分析。对比模拟工况下消除杂散光前后的点源透射率(PST)曲线

结果表明光机系统探测像面PST下降了两个数量级

达到10

-8

~10

-10

。场外星等探测得到的现场数据进一步证明

该设计方案可以有效地抑制杂散光对光电探测系统的影响

从空间背景中提取出五等星探测图

得到了清晰的探测图像。

Abstract

In consideration of stray light sources of a star photoelectric-detection system

this paper analyzes the generation of the stray light and its transmission characteristics

and proposes how to evaluate the effects of stray light on the photoelectric-detection system. A reasonable suppression scheme for the stray light is provided for guiding the design of opto-mechanical structure of the system. Then the main baffle

baffle vane and the coating technology are used to eliminate the effect of stray light on the opto-mechanical structure. The opto-mechanical structure of the system is simulated by a software and the results show that their Point Source Transmittances (PSTs) before and after eliminating the stray light have been reduced by two orders of magnitude between 10

-8

and 10

-10

. Meanwhile

the obtained detection data in experimental field demonstrate that the scheme can extract a detection im- age with 5 star magnitudes

and the stray light has been suppressed effectively.

关键词

Keywords

references

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