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带有红外成像探测系统的飞行器在大气层内高速飞行时,光学头罩与大气层之间发生剧烈的相互作用,产生气动光学效应。该效应将引起像偏移、像模糊、像抖动,使得红外成像探测系统对目标的成像探测威力下降、探测精度降低。研究了高速动平台下气动光学效应的内涵及其对红外成像探测系统探测威力、探测精度的影响机理,对典型飞行状态下产生的气动光学效应进行了数学仿真计算,得到了仿真计算结果,并对仿真结果进行了分析。
When an aircraft with an infrared imaging detection system is flying at high speed in the atmosphere, there is a violent interaction between the optical hood and the atmosphere, resulting in aerodynamic optical effects. This effect will cause the image to shift, like blurring, image shaking, making the infrared imaging detection system to reduce the target’s imaging detection power, reducing the detection accuracy. The connotation of aerodynamic optics under high-speed moving platform and its influence mechanism on the detection power and detection accuracy of infrared imaging detection system are studied. The aerodynamic optical effect generated under typical flight conditions is simulated and the simulation results are obtained. The simulation results were analyzed.