红外技术, 2016, 38 (6): 493, 网络出版: 2016-07-26   

一种分析气动光学传输效应的等效透镜方法

Equivalent Lens Method in Analysis of Aero-optical Transmission Effects
李征威 1,2,3,*向伟 1,3徐保树 1,3张程硕 1,2,3
作者单位
1 中国科学院沈阳自动化研究所, 辽宁 沈阳 110016
2 中国科学院大学, 北京 100049
3 中国科学院光电信息处理重点实验室, 辽宁 沈阳 110016
摘要
针对2.5Ma条件下气动光学传输效应对红外成像的影响进行机理分析。利用有限元仿真得到头罩外流场的温度、压力、空间分布形态的参数。在此数值仿真基础上, 提出将头罩外流场等效为气体透镜的方法, 计算透镜的折射率和焦距及其对原红外成像系统焦点位置的改变量约为49.66 μm, 此改变量小于焦深, 则外流场对红外光线传输的影响基本可以忽略, 成像不会产生模糊。测量风洞实验拍摄到退化图像的调制传递函数(MTF)与红外探测系统的MTF相差很小, 验证了对气动光学传输效应机理分析的正确性。
Abstract
Mechanism analysis of aero-optical transmission effects on infrared imaging at 2.5Ma is carried out. Parameters of external flow field of head guard, which consist of temperature, pressure and spatial distribution, are got by finite element simulation. On the basis of the numerical simulation, a method of which external flow field is equivalent to gas lens is proposed. The refractive index and focal length of the lens are calculated. The location change of focus of original infrared detection system is 49.66 μm. The effect on transmission of infrared lines can be neglected because the change is smaller than the focal depth. The difference between the MTF of degraded images got in wind tunnel test and infrared detection system is small, which verifies the validity of mechanism analysis of aero-optical transmission effects.
参考文献

[1] Peters B, Brown D. CFI-aero-optic images: Issues for Wave Optics Modeling. AIAA 94-2622, 1994.

[2] George W Sutton. Hypersonic interceptor performance center aero-optics performance predictions. AIAA 93-2675, 1993.

[3] 费锦东. 气动光学效应校正技术初步分析[J]. 红外与激光工程, 1999, 28(5):10-12+16.

    Fei Jindong. Preliminary analysis of aero-optics effects correction technology[J]. Infrared and Laser Engineering, 1999, 28(5): 10-12,16.

[4] 殷兴良.气动光学原理[M]. 北京: 中国宇航出版社, 2003: 65-102.

    Yin Xingliang. Principle of Aero Optics[M]. Beijing: China Astronautics Press, 2003: 65-102.

[5] 郭隆德. 高速拦截弹气动光学效应地面模拟测试研究[D]. 成都: 四川大学, 2003: 37-80.

    Guo Longde. The investigation on the AO eeffect ground simulation test and instrumentation of the high speed interceptor[D]. Chengdu: Sichuan Uneiversity, 2013: 37-80.

[6] 杨文霞, 蔡超, 丁明跃, 等. 气动光学效应分析与气动模糊图像复原[J]. 光学学报, 2009, 29(2): 347-352.

    YANG Wenxia, CAI Chao, DING Mingyue, et al. Characterization of aero-optic effects and restoration of aero-optical degraded images[J]. Acta Optica Sinica, 2009, 29(2): 347-352.

[7] 杨文霞, 蔡超, 丁明跃, 等. 超音速/高超音速飞行器湍流流场气动光学效应分析[J]. 光电工程, 2009, 36(1): 88-92.

    YANG Wenxia, CAI Chao, DING Mingyue, et al. Numerical analysis of aero-optic effects induced by the turbulence flow field surrounding super/hypersonic[J]. Opto-Electronic Engineering, 2009, 36(1): 88-92.

[8] 杨欢. 气动光学效应对红外成像影响的仿真分析[D]. 上海: 上海交通大学,2009,11-24.

    YANG Huan. Simulation of the aero-optical effect on infrared image[D]. Shanghai: Shanghai Jiao Tong University, 2009: 11-24.

[9] 赵刚, 张凯, 邵玮, 等. 基于高速湍流统计模型的红外退化图像仿真. 红外技术, 2014, 36(4): 294-297.

    ZHAO Gang, ZHANG Kai, SHAO Wei, et al. An infrared degradation image simulation based on high-speed turbulent statistical model[J]. Infrared Technology, 2014, 36(4): 294-297.

[10] 许东, 陈科杰, 李欣. 基于CFD网格的激波流场热辐射计算方法[J]. 航空兵器, 2013, 1(1): 40-44.

    XU Dong, CHEN Kejie, LI Xin. Calculation method of shockwave field thermal radiation based on CFD[J]. Aero Weaponrt, 2013, 1(1): 40-44.

[11] 朱基智, 赵捍东, 张会锁. 火箭弹外流场的有限元数值仿真[J]. 弹箭与制导学报, 2006, 26(3): 148-150.

    ZHU Jizhi, ZHAO Handong, ZHANG Huisuo. The finite element numerical simulation on external flow field of rocket projectile[J]. Journal of Projectiles, Rockets, Missiles and Guidance, 2006, 26(3): 148-150.

[12] 庞英良, 宋卫东, 杨晓霖. 末制导炮弹末制导段外流场气动仿真[J]. 弹箭与制导学报, 2009, 29(3): 176-178.

    PANG Yingliang, SONG Weidong, YANG Xiaolin. The aerodynamic simulation of external flow of terminal segment of terminal homing projectile[J]. Journal of Projectiles Rockets, 2009, 29(3): 176-178.

[13] 金群锋. 大气折射率影响因素的研究[D]. 杭州:浙江大学, 2006: 12-18.

    JIN Qunfeng. Study on the influencing factors of refractive index of air[D]. Hangzhou: Zhejiang University, 2006: 12-18.

[14] Rüeger Jean M. Refractive Index Formulae for Radio Waves[M]. FIG XXII international Congress Washington, D.C.USA, 2002.

[15] 张以谟. 应用光学[M]. 北京: 电子工业出版社, 2015: 36-46.

    ZHANG Yimo. Applied Optics[M]. Beijing: Publishing House of Electronics Industry, 2015: 36-46.

[16] 徐保树, 史泽林, 冯斌. 一种光电成像系统调制传递函数的测量方法[J]. 光学学报, 2011, 31(11): 107-116.

    XU Baoshu, SHI Zelin, FENG Bin. Modulation transfer function measure- ment method of electro-optical imaging system[J]. Acta Optica Sinica, 2011, 31(11): 107-116.

李征威, 向伟, 徐保树, 张程硕. 一种分析气动光学传输效应的等效透镜方法[J]. 红外技术, 2016, 38(6): 493. LI Zhengwei, XIANG Wei, XU Baoshu, ZHANG Chengshuo. Equivalent Lens Method in Analysis of Aero-optical Transmission Effects[J]. Infrared Technology, 2016, 38(6): 493.

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