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Investigating Detectability of Infrared Radiation Based on Image Evaluation for Engine Flame

机译：基于图像评估的发动机火焰红外辐射可探测性研究

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Aiming at the application requirements of infrared detection, the influence of earth background interference on plume radiation detection is investigated and discussed in this article. The infrared image of the earth’s atmospheric background radiation is simulated by the spectral correlation based on the conversion model of the surface radiation with different bands. The infrared radiation image of the jet flame and the background is generated by overlapping the infrared radiation of the engine flame and the background radiation according to the detection angle of view. Through the image quality evaluation model, the detectability of the flame is analyzed. The simulating results show that the comprehensive statistical features such as image information entropy, variance and signal-to-clutter ratio can be used to evaluate the detectability of the engine flame.
机译：针对红外探测的应用需求，研究并讨论了地球背景干扰对烟羽辐射探测的影响。基于不同波段地表辐射的转换模型，通过光谱相关性模拟地球大气背景辐射的红外图像。喷射火焰和背景的红外辐射图像是根据检测视角通过重叠发动机火焰的红外辐射和背景辐射而生成的。通过图像质量评估模型，分析了火焰的可检测性。仿真结果表明，图像信息熵，方差和信杂比等综合统计特征可用于评价发动机火焰的可探测性。

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