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During supersonic flight, the heat radiation of aero-craft optical window has negative effect on infrared imaging performance. A computational model of radiance transmit route and radiation intensity was built in the paper. And the paper also gave the radiation emission model and infrared imaging model. The problem of heat radiance imaging was transform to the problem of optical computation. The simulation results showed that method proposed by the paper was effective to analysis the heat window radiation problem. An heating sapphire window experiment is designed to validate the simulation result. By subtraction between the deduced image based on model and experiment image, it is found that average error for each pixel is about 0.45. By analysis of experiment results, the infrared image contrast degree and Signal-to-Noise was reduced to about one third of the original ones. And the NETD of infrared system with heating window rose from 52 mK to 954 mK. The heating window radiation analysis model presented by the paper can effectively estimate aero-thermal effects on mid-wave infrared imaging system. The designed experiment developed a effective way to verify imaging system performance. And it is also much meaningful for optimal infrared spectral band selection, imaging parameter adjustment and the hot dome radiation suppression to reduce the image degradation.
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Keywords:
- near-hypersonic /
- high heating sapphire window /
- aero-kinetic effect /
- simulation and experiment
[1] Sun J, Liu W Q 2012 Acta Phys. Sin. 61 124401 (in Chinese) [孙建, 刘伟强 2012 61 124401]
[2] Liu Y Y, Lu Q B, Zhang W X 2012 Acta Phys. Sin. 61 124201 (in Chinese) [刘扬洋, 吕群波, 张文喜 2012 61 124201]
[3] Ji X L 2010 Acta Phys. Sin. 59 692 (in Chinese) [季小玲 2010 59 692]
[4] He X M, Lu B D 2012 Acta Phys. Sin. 61 054201 (in Chinese) [何雪梅, 吕百达 2012 61 054201]
[5] Chen X W, Ji X L 2009 Acta Phys. Sin. 58 2435 (in Chinese) [陈晓文, 季晓玲 2009 58 2435]
[6] Wei H Y, Wu Z S, Peng H 2008 Acta Phys. Sin. 57 6666 (in Chinese) [韦宏艳, 吴振森, 彭辉 2008 57 6666]
[7] Y Z, Yi S H, Chen Z 2013 Acta Phys. Sin. 62 084219 (in Chinese) [朱杨柱, 易仕和, 陈植 2013 62 084219]
[8] He L, Yi S H, Tian L F, Chen Z, Zhu Y Z 2013 Chin. Phys. B 22 024704
[9] Zhu Y Z, Yi S H, He L, Tian L F, Zhou Y W 2013 Chin. Phys. B 22 014702
[10] Gao Q, Yi S H, Jiang Z F, He L, Xie W K 2013 Chin. Phys. B 22 014202
[11] Gao Q, Yi S H, Jiang Z F, Zhao Y X, Xie W K 2012 Chin. Phys. B 21 064701
[12] Yin X L 2003 Aero-optical Mechanism (Beijing: China Astronautics Press) p214 (in Chinese) [殷兴良 2003 气动光学原理 (北京: 中国宇航出版社) 第214页]
[13] Chen C, Fei J D 2005 Infrared and Laser Engineer 34 5 (in Chinese) [陈澄, 费锦东 2005 红外与激光工程 34 5]
[14] Fan Z G, Zhang Y P, Pei Y W 2007 Infrared MillimWaves 26 5 (in Chinese) [范志刚, 张亚萍, 裴扬威 2007 红外与毫米波学报 26 5]
[15] Fan Z G, Xiao H S, Gao Y Q 2009 Applied Optics 30 3 (in Chinese) [范志刚, 肖昊苏, 高豫强 2009 应用光学 30 3]
[16] Fan Z G, Yu C P, Xiao H G, Zhang W 2012 Applied Optics 04 2 (in Chinese) [范志刚, 于翠萍, 肖昊苏, 张旺 2012 应用光学 4 2]
[17] Raghuraman P, Ashkin B J A 2005 AIAA 94 22
[18] Wojciechowski C J, Ravi K V, Jones G 2010 AIAA 93 2684
[19] Wei H 2009 SPIE 13 7513
[20] Xing S X 2010 Infrared imaging and signal processing (Beijing National Defense Industry Press) p159 (in Chinese) [邢素霞, 2010 红外热成像与信号处理 (北京: 国防工业出版社) 第159页]
[21] The Infrared handbook (Vol. 1) (the infrared information center) p151
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[1] Sun J, Liu W Q 2012 Acta Phys. Sin. 61 124401 (in Chinese) [孙建, 刘伟强 2012 61 124401]
[2] Liu Y Y, Lu Q B, Zhang W X 2012 Acta Phys. Sin. 61 124201 (in Chinese) [刘扬洋, 吕群波, 张文喜 2012 61 124201]
[3] Ji X L 2010 Acta Phys. Sin. 59 692 (in Chinese) [季小玲 2010 59 692]
[4] He X M, Lu B D 2012 Acta Phys. Sin. 61 054201 (in Chinese) [何雪梅, 吕百达 2012 61 054201]
[5] Chen X W, Ji X L 2009 Acta Phys. Sin. 58 2435 (in Chinese) [陈晓文, 季晓玲 2009 58 2435]
[6] Wei H Y, Wu Z S, Peng H 2008 Acta Phys. Sin. 57 6666 (in Chinese) [韦宏艳, 吴振森, 彭辉 2008 57 6666]
[7] Y Z, Yi S H, Chen Z 2013 Acta Phys. Sin. 62 084219 (in Chinese) [朱杨柱, 易仕和, 陈植 2013 62 084219]
[8] He L, Yi S H, Tian L F, Chen Z, Zhu Y Z 2013 Chin. Phys. B 22 024704
[9] Zhu Y Z, Yi S H, He L, Tian L F, Zhou Y W 2013 Chin. Phys. B 22 014702
[10] Gao Q, Yi S H, Jiang Z F, He L, Xie W K 2013 Chin. Phys. B 22 014202
[11] Gao Q, Yi S H, Jiang Z F, Zhao Y X, Xie W K 2012 Chin. Phys. B 21 064701
[12] Yin X L 2003 Aero-optical Mechanism (Beijing: China Astronautics Press) p214 (in Chinese) [殷兴良 2003 气动光学原理 (北京: 中国宇航出版社) 第214页]
[13] Chen C, Fei J D 2005 Infrared and Laser Engineer 34 5 (in Chinese) [陈澄, 费锦东 2005 红外与激光工程 34 5]
[14] Fan Z G, Zhang Y P, Pei Y W 2007 Infrared MillimWaves 26 5 (in Chinese) [范志刚, 张亚萍, 裴扬威 2007 红外与毫米波学报 26 5]
[15] Fan Z G, Xiao H S, Gao Y Q 2009 Applied Optics 30 3 (in Chinese) [范志刚, 肖昊苏, 高豫强 2009 应用光学 30 3]
[16] Fan Z G, Yu C P, Xiao H G, Zhang W 2012 Applied Optics 04 2 (in Chinese) [范志刚, 于翠萍, 肖昊苏, 张旺 2012 应用光学 4 2]
[17] Raghuraman P, Ashkin B J A 2005 AIAA 94 22
[18] Wojciechowski C J, Ravi K V, Jones G 2010 AIAA 93 2684
[19] Wei H 2009 SPIE 13 7513
[20] Xing S X 2010 Infrared imaging and signal processing (Beijing National Defense Industry Press) p159 (in Chinese) [邢素霞, 2010 红外热成像与信号处理 (北京: 国防工业出版社) 第159页]
[21] The Infrared handbook (Vol. 1) (the infrared information center) p151
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