System Signal-to-Noise Ratio Analysis of Hyperspectral Imaging Chain Model Based on Electron Multiplication

doi:10.3788/AOS201838.1104002

CIOMP OpenIR

	System Signal-to-Noise Ratio Analysis of Hyperspectral Imaging Chain Model Based on Electron Multiplication
	Yu, Da; Liu, Jinguo; He, Xin; He, Jiawei; Chen, Jiayu; Zhang, Xiaoyang; Peng, Chang
	2018
发表期刊	Guangxue Xuebao/Acta Optica Sinica
ISSN	2532239
卷号	38 期号:11
摘要	The application effect of hyperspectral imaging relies heavily on the acquired signal-to-noise ratio (SNR) of images. The hyperspectral imaging requires a high frame rate and a low SNR for a high spatial resolution. The time-delay-integration (TDI) mode cannot be used to solve the problem of weak light energy, because the spectral imaging contains the two-dimensional spatial-spectral information. A swing mirror is usually used to reduce the application requirement. However, not only the volume and weight increase, but also the acquired image is discontinuous and the space reliability of the moving parts is reduced. Thus the ultra-high speed electron multiplication and the imaging spectroscopy are combined organically, and a high-resolution hyperspectral imaging chain model based on electron multiplication is built. This model can be used for a complete analysis of the SNR in an imaging chain, if all elements such as radiation source, object reflectance, atmospheric radiation transmission, optical system imaging, spectroscopic characteristics, detection spectral response and camera noise are comprehensively considered. The LOWTRAN 7 software is used to investigate the atmospheric radiation transmission. The illuminance at the image plane is calculated for different solar altitudes and object reflectance, and the SNR under different working conditions is calculated according to the noise model of an electron multiplying charge coupled device (EMCCD) detector. Through the analysis and experiment of SNR, a suitable choice of multiplication gain can make the SNR of weak spectral signals enhanced by 6 times. 2018, Chinese Lasers Press. All right reserved.
关键词	Signal to noise ratio Atmospheric radiation Charge coupled devices Detectors Electrons Hyperspectral imaging Light transmission Optical systems Reflection Spectroscopic analysis Spectroscopy
DOI	10.3788/AOS201838.1104002
收录类别	EI
引用统计
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/60829
专题	中国科学院长春光学精密机械与物理研究所
推荐引用方式 GB/T 7714	Yu, Da,Liu, Jinguo,He, Xin,et al. System Signal-to-Noise Ratio Analysis of Hyperspectral Imaging Chain Model Based on Electron Multiplication[J]. Guangxue Xuebao/Acta Optica Sinica,2018,38(11).
APA	Yu, Da.,Liu, Jinguo.,He, Xin.,He, Jiawei.,Chen, Jiayu.,...&Peng, Chang.(2018).System Signal-to-Noise Ratio Analysis of Hyperspectral Imaging Chain Model Based on Electron Multiplication.Guangxue Xuebao/Acta Optica Sinica,38(11).
MLA	Yu, Da,et al."System Signal-to-Noise Ratio Analysis of Hyperspectral Imaging Chain Model Based on Electron Multiplication".Guangxue Xuebao/Acta Optica Sinica 38.11(2018).

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