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摘要:
星敏感器的探测目标是深黑空间中的恒星，属于暗目标探测系统，对杂散光的干扰非常敏感，因此，星敏感器杂散光抑制能力是其观测能力的重要影响因素。以点源透过率（PST）为评价指标，计算观测目标7.5等星时星敏感器需要达到的杂散光抑制指标，并以此为基础，提出一种有效的杂散光抑制方法，包括外遮光罩设计、消杂散光光阑设计，以及内部机械结构的关键表面的消杂散光处理。采用Lighttools软件对设计结果进行仿真，设计与分析结果表明，该杂散光抑制方法能够有效抑制星敏感器的杂散光，实现观测7.5等星的目标。
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关键词:
- 星敏感器 /
- 杂散光 /
- 遮光罩 /
- 光阑 /
- 点源透过率(PST)
Abstract:Star sensor used for deep space stars exploration is a faint signal detector. Star sensor is sensitive to slender stray light, and therefore, the stray light suppressing ability is a key influencing factor of the exploration ability. Through the point source transmittance (PST), the suppression indicators of the star sensor are calculated by the standard of the target brightness which is detected 7m.5 stars. Based on the standard evaluation, an effective suppressing technique is proposed, which includes the design of baffle, stop and special artificial processes for critical objects. In the end, the simulation results are analyzed and calculated with Lighttools software. The results indicate that the stray light suppressing technique is effective, and the results can meet the needs of detecting 7m.5 stars.
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Key words:
- star sensor /
- stray light /
- baffle /
- stop /
- point source transmittance (PST)
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表 1 外遮光罩设计指标要求
Table 1. Design index requirements of baffle
指标 ψ/(°) θ/(°) d/mm PST 数值 35 ±9.3 50 8.76×10-9 
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表 3 4种结构PST计算结果
Table 3. PST calculation results of four structures
结构 PST 35° 40° 45° 50° 55° 60° 65° 70° Ⅰ 9.95×10-8 9.67×10-8 8.88×10-8 8.26×10-8 8.03×10-8 7.49×10-8 7.21×10-8 6.34×10-8 Ⅱ 1.16×10-8 2.65×10-8 2.69×10-8 2.60×10-8 2.53×10-8 2.46×10-8 2.01×10-8 6.26×10-9 Ⅲ 8.57×10-9 8.20×10-9 7.63×10-9 6.85×10-9 6.64×10-9 6.42×10-9 5.34×10-9 1.25×10-9 Ⅳ 7.69×10-9 7.44×10-9 6.82×10-9 6.51×10-9 5.76×10-9 6.03×10-9 5.11×10-9 1.07×10-9
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[1] 姚亚萍.天文知识[M].苏州:苏州大学出版社, 1999:21-28.YAO Y P.Astronomy[M].Suzhou:Suzhou University Press, 1999:21-28(in Chinese). [2] 廖志波, 伏瑞敏, 宗肖颖.星敏感器反射式遮光罩设计[J].红外与激光工程, 2011, 40(1):66-69. http://www.cnki.com.cn/Article/CJFDTOTAL-HWYJ201101017.htmLIAO Z B, FU R M, ZONG X Y.Design of specular baffle of star sensor[J].Infrared and Laser Engineering, 2011, 40(1):66-69(in Chinese). http://www.cnki.com.cn/Article/CJFDTOTAL-HWYJ201101017.htm [3] KAWANO H, SHIMOJI H, YOSHIKAWA S, et al.Suppression of sun interference in the star sensor baffling stray light by total internal reflection[C]//Optical Systems Design 2005, 2005:59621R-1-59621R-10. [4] 何灵娜, 崔维鑫, 裴云天.CMOS星敏感器光学系统的设计[J].光学技术, 2007, 33(增刊):195-198. http://www.cnki.com.cn/Article/CJFDTOTAL-GXJS2007S1077.htmHE L N, CUI W X, PEI Y T.Optical design of CMOS star sensor[J].Optical Technique, 2007, 33(S1):195-198(in Chinese). http://www.cnki.com.cn/Article/CJFDTOTAL-GXJS2007S1077.htm [5] 廖志波, 伏瑞敏, 宗肖颖.星敏感器遮光罩的优化设计[J].中国激光, 2010, 37(4):987-990. doi: 10.3788/CJLLIAO Z B, FU R M, ZONG X Y.Optimal design of baffle of star sensor[J].Chinese Journal of Laser, 2010, 37(4):987-990(in Chinese). doi: 10.3788/CJL [6] 张春明, 解永春, 王立, 等.地球反照对星敏感器的影响分析[J].激光与红外, 2012, 42(9):1011-1015. http://www.cnki.com.cn/Article/CJFDTOTAL-JGHW201209012.htmZHANG C M, XIE Y C, WANG L, et al.Analysis of influence of earth albedo on star tracker[J].Laser & Infrared, 2012, 42(9):1011-1015(in Chinese). http://www.cnki.com.cn/Article/CJFDTOTAL-JGHW201209012.htm [7] 陈世平.景物和成像条件对遥感图像品质的影响[J].航天返回与遥感, 2010, 31(1):1-7. http://www.cnki.com.cn/Article/CJFDTOTAL-HFYG201001001.htmCHEN S P.The effects on romote sensing image quality from scenes and imaging condition[J].Spacecraft Recovery & Remote Sensing, 2010, 31(1):1-7(in Chinese). http://www.cnki.com.cn/Article/CJFDTOTAL-HFYG201001001.htm [8] 张新宇, 郝云彩.星敏感器星点能量分布数学模型及其对精度的影响分析[J].空间控制技术与应用, 2013, 39(3):14-18. http://www.cnki.com.cn/Article/CJFDTOTAL-KJKZ201303002.htmZHANG X Y, HAO Y C.Analysis of the star image energy distribution mathematical model and its effect on the accuracy for a star tracker[J].Aerospace Control and Application, 2013, 39(3):14-18(in Chinese). http://www.cnki.com.cn/Article/CJFDTOTAL-KJKZ201303002.htm [9] 陈博洋, 李欣耀, 郭强, 等.FY-2E卫星杂散光评价与分析[J].红外技术, 2010, 32(11):636-644. http://www.cnki.com.cn/Article/CJFDTOTAL-HWJS201011006.htmCHEN B Y, LI X Y, GUO Q, et al.Estimate and analysis for stray light of FY-2E satellite[J].Infrared Technology, 2010, 32(11):636-644(in Chinese). http://www.cnki.com.cn/Article/CJFDTOTAL-HWJS201011006.htm [10] 李芸, 相里斌, 李立波.一种新型空间相机遮光罩的设计与仿真[J].光电工程, 2010, 37(7):41-44. http://www.cnki.com.cn/Article/CJFDTOTAL-GDGC201007011.htmLI Y, XIANG L B, LI L B.Design and simulation of the baffle of a new type space camera[J].Opto-Electronic Engineering, 2010, 37(7):41-44(in Chinese). http://www.cnki.com.cn/Article/CJFDTOTAL-GDGC201007011.htm [11] 卢卫, 李展, 张建荣, 等.星敏感器中遮光罩设计及结果模拟[J].光电工程, 2001, 28(3):12-15. http://www.cnki.com.cn/Article/CJFDTOTAL-GDGC200103003.htmLU W, LI Z, ZHANG J R, et al.Design of lens hood for star sensor and result simulation[J].Opto-Electronic Engineering, 2001, 28(3):12-15(in Chinese). http://www.cnki.com.cn/Article/CJFDTOTAL-GDGC200103003.htm [12] KAWANO H, SATO Y, MITANI K, et al.New light shielding technique for shortening the baffle length of a star sensor[C]//Conference on Current Developments in Lens Design and Optical Engineering Ⅲ.Bellingham, WA:SPIE, 2002, 4767:62-69. [13] PETERS P J.Aperture shaping-A technique for the control of the spatial distribution of diffracted energy[C]//Conference on Stray Light Problems in Optical Systems.Bellingham, WA:SPIE, 1977, 107:63-70. [14] 赵阳.新型反射式星敏感器光学系统设计[D].哈尔滨:哈尔滨工业大学, 2007:48-56.ZHAO Y.New type reflective optical system design for a star sensor[D].Harbin:Harbin Institute of Technology, 2007:48-56(in Chinese). [15] 吴厚翠.我国星船消杂光功能应用表面处理概况[C]//北京电镀行业清洁生产研讨会, 2002:144-146.WU H C.Development of surface treatment for eliminating parasitic light in satellite manufacturing industry[C]//Beijing Electroplating Industry Clean Production Workshop, 2002:144-146(in Chinese). -
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