Infrared character of aircraft is one important factor to estimate the ability of breaching the defense of enemy, this paper firstly analyzed the method of infrared calibration with collimator and energy factors composing the sky background, propose one method of deleting energy of background within current image; furthermore, the paper points out that the parameters of calibration with collimator can’t be directly applied to computing Infrared character of flying target, and based on that propose the method of deleting energy of background with another background image measured before mission.
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.