20 November 2014 A precise method of earth-based measuring infrared radiant temperature of high-speed flying target
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Proceedings Volume 9300, International Symposium on Optoelectronic Technology and Application 2014: Infrared Technology and Applications; 930011 (2014) https://doi.org/10.1117/12.2071267
Event: International Symposium on Optoelectronic Technology and Application 2014, 2014, Beijing, China
Abstract
The apparent temperature of high-speed flying target is an important parameter when checking the design of heat protection system. This paper analyzes the characteristics of high-speed flying target measured by earth-based staring infrared imaging system, and found out three facts made the measured image blur, the first is energy spread described by Point Spread Function, the second is the phenomenon of target smearing, and the third is atmospheric agitation and turbulence. Also the energy reflected by the target from sun and earth to infrared measuring system should be considered. Thus the method dealt with static or low-speed target isn’t adapt to high-speed target, this paper proposed an effective method dealing with High-speed flying target in infrared image. The first step is computing the luminance reflected by target with information of target’s pose and surface structure, the second step is extracting the target from the infrared image then computing the emission intensity with parameters of calibration, the third step is computing the luminance of target by subtract the energy of background and energy reflected from the target, after computing the atmospheric trans, the apparent temperature is finally found.
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Xiaofei Lu, Jie Sheng, "A precise method of earth-based measuring infrared radiant temperature of high-speed flying target", Proc. SPIE 9300, International Symposium on Optoelectronic Technology and Application 2014: Infrared Technology and Applications, 930011 (20 November 2014); doi: 10.1117/12.2071267; https://doi.org/10.1117/12.2071267
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