红外遮障辐射温度的分析

摘要

红外遮障是地面目标重要的红外伪装器材，它通常由隔热毯和伪装网两部分组成。建立了红外遮障辐射传输过程的物理模型，对所涉及太阳和天空辐射、辐射换热、热传导、自然对流等进行了分析；利用有限元方法对该过程进行了仿真分析计算，得出红外遮障系统最外表面的辐射温度值，并考察了目标温度以及隔热毯、伪装网材料参数对该温度值的影响。所建立模型以及所得结果可以为红外遮障的遮蔽效果分析和相关工程应用提供参考。%Infrared screen is an important IR camouflage equipment of ground objects. It is usually composed of heat insulation blanket and camouflage net. The physics model of heat transfer of infrared screen is established. Solar and sky radiation, radiation heat transfer, heat conduction and natural convection involved in above model are analyzed. Simulation analysis and calculation is performed to the process by finite element method. And the radia⁃tion temperature values of most outside surface of the infrared screen system are figured out. Then the target temper⁃ature and the heat insulation blanket and the camouflage net material parameters influencing on the temperature val⁃ue are investigated. The established model and calculation results can provide references for the analysis of camou⁃flage effect of infrared screen and relative engineering applications.