摘要
针对现有文献在卫星红外特性研究时忽略其物性参数随温度变化对红外特性的影响，首先建立了卫星温度场的理论计算模型；然后利用有限元法进一步推导了卫星太阳翼的物性参数随温度变化时卫星温度场的求解方法；接着建立了卫星红外辐射出射度与红外辐射强度空间分布的计算模型；最后计算分析了太阳翼物性参数随温度变化对自身温度和红外特性以及对卫星整体在3～6μm和6～16μm两个波段红外辐射强度空间分布的影响。文章的研究结果对于提高空间目标红外特性的计算精度以及空间目标的红外探测具有参考价值。
The present literatures have not analyzed the influence of satellite＇ s physical parameters changing with the temperature on its infrared feature. First, the theoretical calculation models of the satellite＇s temperature field were established. Second, the calculation method of the satellite＇s temperature field was deduced with the use of the finite element method （FEM） when physical parameters of solar panels changed with the temperature. Third, the calculation models of the sateUite＇s infrared radiant emittance and its infrared radiant intensity were established. Finally, the influence of physical parameters of solar panels changing with the temperature on the surface temperature, infrared feature and the spatial distributions of infrared radiation intensities in 3-6 μm band and in 6-16μm band of the satellite were calculated and analyzed. The research results of this paper have referential value on the improving calculation precision of infrared feature and infrared detecting of spatial targets.
出处
《红外与激光工程》
EI
CSCD
北大核心
2013年第8期1962-1966,共5页
Infrared and Laser Engineering
基金
安徽省红外与低温等离子体重点实验室项目(2011A1026)
关键词
地球卫星
温度分布
物性参数
红外特性
earth satellite
temperature distribution
physical parameter
infrared feature
