建立了完善的空间气球温度场与红外辐射特征的理论计算模型。首先建立了计算所需要的空间坐标系并计算了空间气球接收到的空间辐射热流,其次利用有限元软件ANSYS 10.0 求解瞬态热平衡方程得到了空间气球的表面温度分布,然后在3~6 μm 和6~16 μm 红外波段分别计算了空间气球作为点源时的红外辐射强度空间分布,最后详细比较并分析了空间气球与空间弹道式目标在表面温度分布和红外辐射强度空间分布的不同。文章的研究结果对于空间目标的红外探测与识别具有参考价值。

The perfect theoretical calculation models of the spatial balloon’s temperature field and IR radiant feature are built up. The space heat flux which the spatial balloon gets is calculated in the appropriate coordinate system. The surface temperature distribution of the balloon is gotten by solving the transient heat balance equations with the use of the finite element software,ANSYS 10.0. On the basis of the solved surface temperature distribution,taking the balloon as a point object,the spatial distribution of infrared radiation intensity in two IR bands is calculated. Finally,the differences of the surface temperature distribution and the infrared radiation intensity spatial distribution between the spatial balloon gotten in this paper and a spatial ballistic target gotten in our previous work are compared and analyzed in detail. The research results have referential value on infrared detecting and recognition of spatial targets.