The atmospheric turbulence effect is one of the important factors that seriously affect the image quality of aerial photoelectric reconnaissance system. Starting from the description of atmospheric turbulence parameters, the influence mechanism of atmospheric turbulence on the imaging quality of optical system was researched, the influencing factors of atmospheric turbulence on the modulation transfer function (MTF) of optical system were analyzed, and the theoretical model of atmospheric turbulence on the imaging MTF of optical system was established. The simulation results show that under the influence of atmospheric turbulence, the ratio of optical system pupil aperture to atmospheric coherence diameter has a great influence on the imaging MTF. By comparing the ground field experimental images of the optical system, the imaging MTF theoretical model of the actual optical system affected by atmospheric turbulence was verified. The research results can provide theoretical supports for the design of aerial photoelectric reconnaissance system and the improvement of imaging quality under the influence of atmospheric turbulence.
Key words
atmospheric turbulence /
image quality /
atmospheric coherence diameter /
modulation transfer function
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References
王惠林, 刘吉龙, 吴雄雄, 等. 航空光电侦察图像质量影响因素分析[J]. 应用光学,2021,42(5):817-829. WANG Huilin, LIU Jilong, WU Xiongxiong, et al. Analysis of image quality influencing factors for aerial electro-optical detection[J]. Journal of Applied Optics,2021,42(5):817-829.
朱海滨, 邵毓, 张远健, 等. 可见光/红外双视场全景式航空侦察相机光学系统设计[J]. 应用光学,2017,38(1):7-11. ZHU Haibin, SHAO Yu, ZHANG Yuanjian, et al. Optical system design of visible/infrared and double-FOV panoramic aerial camera[J]. Journal of Applied Optics,2017,38(1):7-11.
李永昆, 林招荣, 张绪国. 国外远距斜视航空相机发展概况[J]. 航天返回与遥感,2017,38(6):11-18. LI Yongkun, LIN Zhaorong, ZHANG Xuguo. Development survey of foreign aerial cameras for distant oblique reconnaissance[J]. Spacecraft Recovery & Remote Sensing,2017,38(6):11-18.
贾平, 张葆. 航空光电侦察平台关键技术及其发展[J]. 光学精密工程,200
LEE J H, JUNG Y S, RYOO S Y, et al. Imaging performance analysis of an EO/IR dual band airborne camera[J]. Journal of the Optical Society of Korea,2011,15(2):174-181.
IYENGAR M. The Goodrich 3rd generation DB-110 system: operational on tactical and unmanned aircraft[J]. SPIE ,2006:6209E:620909-1-14.
WYATT S H. Dual spectral band reconnaissance systems for multiple platforms[J]. SPIE,2002,4824:36-46.
RAO Ruizhong. Light propagation in the turbulent atmosphere[M]. Hefei: Anhui Science and Technology Press, 2005.
WU Jian, YANG Chunping, LIU Jianbin. Theory of light transmission in the atmosphere[M]. Beijing: Beijing University of Posts and Telecommunications Press, 2005.
LEI F, TIZIANI H J. Atmospheric influence on image quality of airborne photographs[J]. Optical Engineering,1993,32(9):2271-2280.
TATARSKI V I. Wave propagation in a turbulent medium[M]. USA: Courier Dover Publications, 2016.
FRIED D L. Optical resolution through a randomly inhomogeneous medium for very long and very s
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