中段弹道目标的温度场与红外辐射特性计算

红外辐射特性是预警系统探测识别弹道中段目标的重要特征之一。通过计算飞行时目标与太阳、地球的相对位置，确定目标的受外辐射照射状态。利用有限容积法计算锥形目标的三维温度场，采用双向反射分布函数（BRDF）计算目标表面对太阳、地球辐射的反射特性，并结合自身红外辐射，得到了不同类型中段目标红外辐射特性变化情况和空间分布情况。最后，分析了外部辐射环境和目标材料特性对目标红外辐射特性的影响，为中段预警探测提供了参考。

Calculation of Temperature Field and Infrared Radiation Characteristics of Midcourse Ballistic Target

The infrared radiation of midcourse ballistic targets is an important property for the early warning system to detect and identify.The relative position between the Sun,the earth and the target are calculated to get the objectives of the affected by external radiation.A finite volume method is used to calculated the three-dimensional temperature field of coneshaped targets,bi-directional reflectance distribution function(BRDF) to get the reflective properties from the radiation of the Sun and the Earth,and ...