System Signal-to-Noise Ratio Analysis of Hyperspectral Imaging Chain Model Based on Electron Multiplication
文献类型：期刊论文
| 作者 | Yu, Da; Liu, Jinguo ; He, Xin; He, Jiawei; Chen, Jiayu; Zhang, Xiaoyang; Peng, Chang
|
| 刊名 | Guangxue Xuebao/Acta Optica Sinica
 |
| 出版日期 | 2018 |
| 卷号 | 38期号:11 |
| 关键词 | Signal to noise ratio Atmospheric radiation Charge coupled devices Detectors Electrons Hyperspectral imaging Light transmission Optical systems Reflection Spectroscopic analysis Spectroscopy |
| ISSN号 | 2532239 |
| DOI | 10.3788/AOS201838.1104002 |
| 英文摘要 | 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. |
| 源URL | [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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