大气与环境光学学报 ›› 2010, Vol. 5 ›› Issue (1): 26-31.

• 大气光学 • 上一篇    下一篇

基于傅立叶变换红外光谱仪的水平大气透过率测量研究

吕炜煜1,2, 朱文越1, 李志朝2, 苑克娥1, 杨锐2, 封双连2, 王炎2, 姚永邦1, 魏合理1, 姚东升2, 饶瑞中1   

  1. (1.中国科学院安徽光学精密机械研究所中国科学院大气成分与光学重点实验室,安徽 合肥 230031; 
    2. 西北核技术研究所,陕西 西安 710024)
  • 出版日期:2010-01-28 发布日期:2010-01-26
  • 通讯作者: 吕炜煜(1974-),男,江苏人,硕士,工程师,主要从事大气光学测量工作。 E-mail:xylv_0551@163.com
  • 作者简介:吕炜煜(1974-),男,江苏人,硕士,工程师,主要从事大气光学测量工作。
  • 基金资助:

    中国科学院创新基金(CXJJ-2499)资助

Research of measurements of Atmospheric Transmittance Based on Fourier Transform Infrared Spectrometer

LV Wei-yu1,2, ZHU Wen-yue1, LI Zhi-chao2, YUAN Ke-e1, YANG Rui2, FENG Shuang-lian2, WANG Yan2, YAO Yong-bang1, WEI He-li1, YAO Dong-sheng2, RAO Rui-zhong1   

  1. (1 Key Laboratory of Atmospheric Composition and Optical Radiation, Anhui Institute of Optics and Fine Mechanics,Chinese Academy of Sciences, Hefei 230031,China; 
    2 Northwest Institute of Nuclear Technology ,Xi’an 710024, China)
  • Published:2010-01-28 Online:2010-01-26

摘要:

利用红外辐射源发出稳定的宽带辐射信号,ABB Bomem MR170 FTIR光谱仪作为接收探测系统,组建了一套近地面野外大气红外大气透过率测量系统。通过FTIR得到的透过率与MOTRAN的计算结果进行对比,发现二者虽然具有较好的相关度,但是在透过率较高的波段(2500~3000 cm-1,4400~4800 cm-1)数据会有较大差别。结合水汽的变化情况,分析了2400 cm-1的透过率随时间变化情况,说明在局地环境下水汽参数变化会对模型计算的大气透过率带来影响。

关键词: 大气透过率, 傅立叶变换, 红外

Abstract:

The steady broad band radiation signal, from the infrared radiation source, passed through a collimator and propogated atmosphere. It was received by the ABB Bomem MR 170 FTIR spectrometer, the detection system. Based on the spectrometer, a set of surface atmospheric infrared transmittance measurement system in open air was constructed. In Hefei area, the system was used to measure actual atmospheric transmittance. Compared the measured results with MODTRAN outputs, the correlation coefficients are bigger than 0.9, but there are great differences at regions from 2500 cm-1 to 3000 cm-1 and from 4400 cm-1 to 4800 cm-1. By analyzing the changes of water vapor concentration and the transmittance of 2400 cm-1 along with time, the results indicate that the changes of water vapor parameter of local area environment take effect on the transmittance of atmospheric model.

Key words: transmittance, Fourier transform, infrared

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