详细分析计算了沙漠环境中, 能够对导弹红外辐射特性产生影响的太阳、云层、大气、沙漠地表以及沙尘等的辐射强度情况, 重点研究了沙漠地表沙物质组成及沙尘环境对地表辐射强度的影响, 并建立了导弹的蒙皮、尾喷口和尾焰的红外辐射强度计算模型, 分析了在不同探测距离下, 导弹在各红外波段的辐射强度随探测角度的变化情况, 对计算结果进行分析并得出结论, 尾焰是导弹最主要红外辐射源, 且辐射主要集中在 3～5 μm波段, 蒙皮辐射主要集中在 8～12 μm波段, 随着探测距离的增加, 到导弹的红外辐射特性衰减加剧。

Analyzed the radiation intensity of the influence factors on infrared radiation characteristics of missiles, such as sun, clouds, atmosphere, Earth's surface of desert, and the dust. Then, the influence of desert sandy material composition and dust environment, which can work in the infrared radiation characteristics of Earth's surface, are studied emphatically. After that, the infrared radiation calculation models of the missile's skin, exhaust nuzzle, and wake flame are built, and analyzed the infrared radiation intensity changes with detection angles through different detection distances. At last, got the conclusion, wake flame is the first main source of missile's infrared radiation, which focus on the bands between 3～5 μm, infrared radiation of the skin is mainly between 8～12 μm, with the increase of detection distance, the attenuation of missile's infrared radiation also increased.