850μm波段天空温度的计算模型  

Model of Sky Radiation Temperatures in 850 μm Wave Band

作　　者：龚冰[1] 娄国伟[1] 李兴国[1] 

机构地区：[1]南京理工大学,江苏南京210094

出　　处：《红外技术》2010年第1期33-36,40,共5页Infrared Technology

基　　金：国防预研基金项目

摘　　要：近年来,电磁波谱中亚毫米波段的开发得到了国内外越来越多的重视。在研究亚毫米波段能量表征和大气辐射理论的基础上,提出一种用于850μm波段天空温度计算的模型。该模型综合考虑了大气中水蒸气、氧气,以及云(雾)、降雨等多种影响天空温度的因素。同时,利用模型仿真和计算了不同气象条件下的天空温度,并对天空温度和湿度或天顶角等影响因素之间的关系进行分析。最后,给出了该波段天空温度的变化规律。In resent years, the development of sub-millimeter wave （SMMW） in the electromagnetic spectrum gets more and more attentions at home and abroad. Based on the energy characterization and atmosphere radiation theory, the model of sky radiation temperatures in 850 μm wave band is introduced. It includes some influencing factors, which influence the values of sky radiation temperatures, such as vapor, oxygen, cloud, rain and so on. At the same time, the sky radiation temperatures in the different meteorological conditions are calculated and emulated by using the model. And the relations of humidity or zenith angles and sky radiation temperatures are analyzed. Finally, the variation laws of sky radiation temperatures in the wave band are given qualitatively.

关 键 词：亚毫米波 模型 天空温度 湿度 天顶角 

分 类 号：TN215[电子电信—物理电子学]