针对目标的探测、识别、红外特性的模拟以及红外隐身技术的研究,建立了自然环境下人工红外光照射地面目标的理论模型,通过建立导热微分方程和边界条件,得到了计算人工光照时目标表面温度的方法。以某建筑物的表面为例,对采用不同光照时间、不同光照功率以及不同光照距离时目标的温度进行了仿真计算和讨论;在此基础上,对目标的红外辐射进行了计算与分析。结果表明:短时间照射时,目标红外特性改变取决于目标对光源的反射辐射;长时间照射时,取决于目标自身的辐射和对光源的反射辐射。

As for detection and identification of target, simulation for infrared characteristic and research on infrared stealth technology, theoretical model of infrared illuminator designating ground targets under natural conditions was built. Through building heat conduction differential equations and boundary condition, the method of calculating surface temperature of targets through artificially infrared illuminator was obtained. Taking the building's surface for example, surface temperature with different designating duration, different power, and different distance were calculated and discussed; On the basis of temperature calculation, the infrared designation through artificially infrared illuminator was calculated and analyzed. The result shows that in short time designation, the degree of variety is determined by targets' reflective-radiation from the infrared illuminator; in long time radiation, the degree of variety is determined by targets' radiation and reflective-radiation.