中国光学（中英文）2023，Vol.16Issue(6)：1424-1432,9.DOI:10.37188/CO.2023-0032
空间目标地基观测红外辐射特性研究
Infrared radiation characteristics of space target based on ground-based detector
摘要
Abstract
Constructing the radiation characteristics of space targets is of great significance for the develop-ment of space situational awareness technology.In this study,we aim to investigate the infrared radiation characteristics of space targets by developing a simulation program based on the finite element method and unstructured tetrahedral mesh.Through vector coordinate transformation,we calculate the orbit external heat flux received by each surface of the target.By combining the surface material properties and Bidirectional Reflection Distribution Function(BRDF),the temperature and infrared radiation characteristics of each tar-get surface were simulated.Furthermore,we analyze the spectral radiation intensity of the target in the as-cending and descending orbital arcs under ground-based detection conditions,taking into account the effects of atmospheric attenuation and background radiation.The results show that,for a three-axis stabilized syn-chronous orbit satellite with solar panels fixed in the flight direction,the temperature variation range of each surface in the sunlight area and the shadow area is small.The detection effect of the long-wave band of 8～14 μm is better than that of the medium-wave band of 3～5 μm,and the maximum radiation intensity is about 770 W/sr.Ground-based infrared spectrum detection is more affected by the atmosphere,and the detection band must be optimally selected.关键词
空间目标/红外光谱辐射/地基探测/轨道外热流/大气衰减Key words
space target/infrared spectrum radiation/ground-based detection/orbit external heat flow/atmo-spheric attenuation分类
数理科学引用本文复制引用
郑鸿儒,马岩,张帅,陈亚涛..空间目标地基观测红外辐射特性研究[J].中国光学（中英文）,2023,16(6):1424-1432,9.基金项目
国家自然科学基金重大项目重点课题(No.61890965)Supported by National Natural Science Foundation of China(No.61890965) （No.61890965）
