J4 ›› 2011, Vol. 28 ›› Issue (2): 142-146.

• 第二届全国光学青年学术论坛论文选登 • 上一篇    下一篇

偏振傅里叶变换红外光谱仪定标研究

龚忠清1,2,孙晓兵1, 张荞1,洪津1   

  1. 1 中科院安徽光学精密机械研究所,通用光学定标与表征技术重点实验室,安徽 合肥 230031; 
    2 解放军炮兵学院,安徽 合肥 230031
  • 出版日期:2011-03-28 发布日期:2011-03-03
  • 通讯作者: 孙晓兵(1966-),男,安徽,研究员,博士,主要从事光学偏振遥感技术研究. E-mail:xbsun@aiofm.ac.cn
  • 作者简介:龚忠清(1973-),男,安徽,中国科学院安徽光学精密机械研究所硕士研究生.E-mail: gongzhq@mail.ustc.edu.cn.
  • 基金资助:

    国家自然科学基金(40971196)资助项目

Calibration of polarimetric Fourier transform infrared spectrometer

GONG Zhongqing1,2, SUN Xiaobing1, ZHANG Qiao1, HONG Jin1   

  1. 1 Remote Sensing Laboratory , Anhui Institute of Optics and Fine Mechanics , Chinese Academy of Sciences , Hefei 230031 , China; 
    2 Artillery Academy of People's Liberation of Army, Hefei 230031, China
  • Published:2011-03-28 Online:2011-03-03

摘要:

利用偏振傅里叶变换红外(FTIR)光谱仪测量目标红外偏振特性,需要对偏振FTIR光谱仪进行定标,计算出红外辐射目标的绝对光谱能量分布。利用黑体进行偏振FTIR光谱仪定标时,发现不同偏振检测方向的仪器响应有一定偏差,即仪器存在偏振敏感性。通过对仪器偏振特性的定标检测,得到仪器偏振响应函数和偏置特性曲线,应用定标结果,将会消除红外偏振仪器自身的偏振敏感性对目标偏振特性的影响,为提高目标的红外偏振探测精度打下基础。

关键词: 傅里叶光学, 仪器响应函数, 定标, 偏振, 红外

Abstract:

The infrared polarization properties of target can be measured by polarimetric Fourier Transform Infrared(FTIR)Spectrometer. In order to obtain spectral radiance distribution of the target, the instrument must be calibrated in IR waveband. The experimental results indicate that the instrument response functions of the polarimetric FTIR Spectrometer are inconsistent at different polarized orientations. It was caused by the instrumental polarization sensitivity. The polarization characteristics of the instrument were measured and the instrument response function and its offset were acquired. The influence of instrumental polarization sensitivity is eliminated using the result of calibration, Which lay solid foundations for improving polarization detection accuracy of the infrared targets.

Key words: Fourier optics, instrument response functions, calibration, polarization, infrared

中图分类号: