Research on methods of spectral calibration and radiometric calibration of the windowing Fourier transform imaging spectrometer

Lei Zhang; Jiao Bo Gao; Yu Jie Zhao; Yan Ling Luo; Xiang Guo Xiao; Fang Zhang

doi:10.1117/12.2033092

30 August 2013 Research on methods of spectral calibration and radiometric calibration of the windowing Fourier transform imaging spectrometer

Lei Zhang, Jiao Bo Gao, Yu Jie Zhao, Yan Ling Luo, Xiang Guo Xiao, Fang Zhang

Author Affiliations +

Proceedings Volume 8910, International Symposium on Photoelectronic Detection and Imaging 2013: Imaging Spectrometer Technologies and Applications; 891011 (2013) https://doi.org/10.1117/12.2033092
Event: ISPDI 2013 - Fifth International Symposium on Photoelectronic Detection and Imaging, 2013, Beijing, China

Abstract

Spectral calibration and radiometric calibration is an important part in the data processing of the windowing Fourier transform imaging spectrometer, it can ensure that the spectral curve output from spectrometer are more closely to target spectrum. The main idea of spectral calibration is using a monochromatic source whose wavelength is known, in the same way, radiometric calibration can be achieved by using radiation source whose radiation characteristic is known.

In this paper, we propose a set of methods of spectral calibration and radiometric calibration. In order to carry out spectral calibration, we use monocharomator to scan several sample points near the position of every spectral channel of imaging spectrometer, and then we employ Gaussian fitting function to determine the central wavelength and bandwidth of every spectral channel. In order to carry out radiometric calibration, we employ panchromatic light source and integrating sphere, at the position of every spectral channel of imaging spectrometer, we measure the response ability of spectrometer to radiation. The calibration accuracy is carefully analyzed. Experimental results show that calibration accuracy meet the given requirements.

Citation Download Citation

Lei Zhang, Jiao Bo Gao, Yu Jie Zhao, Yan Ling Luo, Xiang Guo Xiao, and Fang Zhang "Research on methods of spectral calibration and radiometric calibration of the windowing Fourier transform imaging spectrometer", Proc. SPIE 8910, International Symposium on Photoelectronic Detection and Imaging 2013: Imaging Spectrometer Technologies and Applications, 891011 (30 August 2013); https://doi.org/10.1117/12.2033092

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