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Proceedings Paper

Analysis for signal-to-noise ratio of hyper-spectral imaging FTIR interferometer
Author(s): Xun-niu Li; Wei-jian Zheng; Zheng-gang Lei; Hai-yang Wang; Yan-peng Fu
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Paper Abstract

Signal-to-noise Ratio of hyper-spectral imaging FTIR interferometer system plays a decisive role on the performance of the instrument. It is necessary to analyze them in the development process. Based on the simplified target/background model, the energy transfer model of the LWIR hyper-spectral imaging interferometer has been discussed. The noise equivalent spectral radiance (NESR) and its influencing factors of the interferometer system was analyzed, and the signal-to-noise(SNR) was calculated by using the properties of NESR and incident radiance. In a typical application environment, using standard atmospheric model of USA(1976 COESA) as a background, and set a reasonable target/background temperature difference, and take Michelson spatial modulation Fourier Transform interferometer as an example, the paper had calculated the NESR and the SNR of the interferometer system which using the commercially LWIR cooled FPA and UFPA detector. The system noise sources of the instrument were also analyzed in the paper. The results of those analyses can be used to optimize and pre-estimate the performance of the interferometer system, and analysis the applicable conditions of use different detectors. It has important guiding significance for the LWIR interferometer spectrometer design.

Paper Details

Date Published: 30 August 2013
PDF: 10 pages
Proc. SPIE 8910, International Symposium on Photoelectronic Detection and Imaging 2013: Imaging Spectrometer Technologies and Applications, 89101P (30 August 2013); doi: 10.1117/12.2034680
Show Author Affiliations
Xun-niu Li, Kunming Institute of Physics (China)
Beijing Institute of Technology (China)
Wei-jian Zheng, Kunming Institute of Physics (China)
Beijing Institute of Technology (China)
Zheng-gang Lei, Kunming Institute of Physics (China)
Hai-yang Wang, Kunming Institute of Physics (China)
Beijing Institute of Technology (China)
Yan-peng Fu, Kunming Institute of Physics (China)
Beijing Institute of Technology (China)


Published in SPIE Proceedings Vol. 8910:
International Symposium on Photoelectronic Detection and Imaging 2013: Imaging Spectrometer Technologies and Applications
Lifu Zhang; Jianfeng Yang, Editor(s)

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