亚毫米波的大气传输研究  

THE RESEARCH OF THE ATMOSPHERIC PROPAGATION IN SMMW REGIONS

作　　者：唐义平[1] 李卫 李兴国[1] 张奇 罗正发[2] 

机构地区：[1]南京理工大学电光学院,南京210094 [2]昆明物理研究所,昆明650223

出　　处：《红外与激光工程》1997年第1期25-32,共8页Infrared and Laser Engineering

摘　　要：主要研究了在近亚毫米波段的大气传输特性。通过分析远红外区和毫米波区的大气传输模型，给出了亚毫米波段的大气传输模型以及加权项的表达形式，推导了以宏观气象条件为参变量的解析表达式，加权模型与实验数据基本吻合。在散射模型中，以气溶胶形式存在的粒子对同一波长的散射表现不同，提出了以粒子的统计分布均位代替一般的密度分布，从而提高了计算精度。模拟计算结果与实验分析是一致的。It is studied in this paper the characterization of the atmospheric propagation in SMMW regions, in which the SMMW propagation model and weighted expression are developed while analyzing the atmospheric propagation models in infrared and millimeter regions. The expression is computed with the parameters of general meteorological phenomena. It is shown that the SMMW model can be used in engineering design as the experimental data are verified with the theoretical calculation. In consideration of the scattering model that the areosol particle scattering may be different at the same wavelength, mean particle statistic distribution is derived in place of particle density distribution to approve the accuracy of scattering and absorption calculation in infrared, SMMW and millimeter regions.

关 键 词：大气波导传输 大气衰减 大气散射 亚毫米波 

分 类 号：TN015[电子电信—物理电子学]