红外与毫米波学报2017，Vol.36Issue(5)：620-627,8.DOI:10.11972/j.issn.1001-9014.2017.05.018
基于非局域热平衡模式的临近空间目标背景临边对比度模型
Model of near-space limb contrast based on non-local thermodynamics equilibrium model
摘要
Abstract
A physical model was established for studying near-space limb radiance contrast when the target is detected by space-borne infrared surveillance system.The definition of limb contrast and radiation issues of upper atmosphere of the model was described in detail.The target's limb contrasts were simulated and analyzed to show upper atmospheric radiation properties' effects to the target visibility based on non-local thermodynamics equilibrium atmospheric model and assumed detector's noise.The results indicate that the detector's noise must be considered for evaluating surveillance feasibility correctly.The contrast at the traditional waveband of the strong absorption by water vapor is better than the often-used ‘ atmospheric windows’ for the upper atmospheric limb detection.The complicated contrast characteristics result from the relationship among target inherent radiation,atmospheric absorption and background radiation.关键词
大气光学/红外辐射/非局域热平衡/临近空间/临边对比度Key words
atmospheric optics/infrared radiation/non-local thermodynamics equilibrium/near-space/limb contrast分类
数理科学引用本文复制引用
刘栋,戴聪明,唐超礼,武鹏飞,刘铮,毛宏霞,魏合理..基于非局域热平衡模式的临近空间目标背景临边对比度模型[J].红外与毫米波学报,2017,36(5):620-627,8.基金项目
国家自然科学基金(41505023)Supported by the National Natural Science Foundation of China (41505023) （41505023）
