CAJ | 학술논문

建立了卫星温度场与红外辐射特性的理论计算模型.首先利用有限元法求解瞬态热平衡方程,得到了卫星的温度场分布,然后根据卫星的表面温度分布,在3～6μm和6～16μm波段计算了卫星的红外辐射出射度,并对其变化规律及影响因素进行了详细的分析.最后将卫星视为空间点目标,计算比较了卫星处于日照区和地影区时两个波段的红外辐射强度空间分布.该研究结果对于空间目标的红外探测与识别具有参考价值.
건립료위성온도장여홍외복사특성적이론계산모형.수선이용유한원법구해순태열평형방정,득도료위성적온도장분포,연후근거위성적표면온도분포,재3～6μm화6～16μm파단계산료위성적홍외복사출사도,병대기변화규률급영향인소진행료상세적분석.최후장위성시위공간점목표,계산비교료위성처우일조구화지영구시량개파단적홍외복사강도공간분포.해연구결과대우공간목표적홍외탐측여식별구유삼고개치.
The theoretical calculation models of the satellite's temperature field and infrared radiation feature were established. Firstly, the temperature field distribution of the satellite was obtained by solving the transient heat balance equations with the finite element method(FEM). Secondly, on the basis of the solved surface temperature distribution, the infrared radiant exitances of the satellite in 3-6 μm band and 6-16 μm band were calculated and the change rules and influence factors of the infrared radiant exitances were analyzed in detail. Finally, the satellite was treated as a spatial point and the spatial distributions of infrared radiation intensities in two IR bands of the satellite in the sunshine and the earth's shadow were calculated and compared. The research results have referential value on infrared detecting and recognition of spatial targets.