|
|
|
|
|
|
| Noise Analysis and Processing Method of Environment Monitoring Instrument |
| ZHANG Quan1, 2, HUANG Shu-hua1*, TIAN Yu-ze1, 2, LU Yue-lin1, 2, ZHAO Min-jie1, ZHOU Hai-jin1, ZHAO Xin1, WANG Yu1, SI Fu-qi1 |
1. Key Laboratory of Environment Optics and Technology, Anhui Institute of Optics and Fine Mechanics, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, China
2. University of Science and Technology of China, Hefei 230026, China |
|
|
|
|
Abstract The noise has a significant effect on the Signal to Ratio(SNR) of the trace gas absorption spectrometer, which is a standard for evaluating the imaging quality and trace gas retrieving capability. To quantitatively assess factors affecting SNR, and remove the noise of the spectrometer system, the noise source of the spectrometer is analyzed and the corresponding noise model is given. On this basis, the SNR model of the spectrometer is established in this paper. In addition, the effects of incident light intensity, integration time and system gain on the SNR are studied. The relationship between the different operating modes and different parameters and SNR is verified by the calibration experiment data of the spectrometer. And the main system noise is proposed: the linear deviation is used to determine the system offset noise. Besides, the temperature correction factor is obtained by using the dark current temperature correlation on the ground to realize the load in-orbit dark current correction. In the linear range of the detector response PRNU noise is corrected by the two-point correction method. The results show that the DN value of UV1 channel electronic offset noise is 2 625, and UV2 is 2 763. The dark current noise is the main part when the CCD imaging surface temperature is higher than 0 ℃, The temperature decreases to -20 ℃ when the rest of the noise plays a leading role to verify the best cooling temperature of the CCD; SNR increases with the increasing incident light response and integration time, the system gain will not affect SNR; PRNU noise was significantly improved by correction, decreasing from 3.32% to 0.47%, improving the spectral quality of the spectrometer. The noise analysis and processing methods are conducive to trace gas retrieve of further spectral data.
|
|
Received: 2017-09-20
Accepted: 2018-01-13
|
|
|
|
Corresponding Authors:
HUANG Shu-hua
E-mail: hsh@aiofm.ac.cn
|
|
[1] Damiani A, De Simone S, Rafanelli C, et al. Remote Sensing of Environment, 2012, 127：162.
[2] Butz A, Galli A, Hasekamp O, et al. Remote Sensing of Environment, 2012, 120：2331.
[3] ZHOU Hai-jin，LIU Wen-qing，SI Fu-qi，et al(周海金, 刘文清, 司福祺, 等). Opt. Precision Eng.(光学 精密工程), 2012, 20(11): 2331.
[4] ZHAO Min-jie, SI Fu-qi, JIANG Yu, et al(赵敏杰, 司福祺, 江 宇, 等). Opt. Precision Eng.(光学 精密工程), 2013, 21(3): 567.
[5] John J Davenport, Jane Hodgkinson, John R Saffell, et al, Appl. Opt.，2015，54：8135.
[6] George Zonios. Appl. Opt.，2010，49：163.
[7] ZHANG Wen-wen, QIAN Yue-hong, CHEN Qian, et al(张闻文, 钱月红, 陈 钱, 等). Acta Photonica Sinica(光子学报), 2013, 42(11): 1345.
[8] CHENG Shu-bo, ZHANG Hui-ge, LIU Hao, et al(程书博, 张惠鸽, 刘 浩，等). Acta Optica Sinica(光学学报), 2012, 32(2): 0204001
[9] LIU Ze-xun, WAN Zhi, LI Xian-sheng, et al(刘则洵, 万 志, 李宪圣, 等). Opt. Precision Eng.(光学 精密工程), 2015, 23(7): 1829.
[10] ZHANG Chen, SUN Shi-lei, SHI Wen-xuan, et al(张 晨, 孙世磊, 石文轩, 等). Opt. Precision Eng.(光学 精密工程), 2016, 24(10): 2532.
[11] CHANG Zhen, WANG Yu, SI Fu-qi, et al(常 振, 王 煜, 司福祺, 等) Chinese Journal of Lasers(中国激光), 2017, 44(8): 0804002.
[12] LI Jing, ZHAO Jian-ke, CHANG Ming, et al(李 晶, 赵建科, 昌 明, 等) Opt. Precision Eng.(光学 精密工程), 2017, 25(1): 73.
[13] WANG De-jiang，SHEN Hong-hai，SONG Yu-long，et al(王德江, 沈宏海, 宋玉龙，等). Acta Photonica Sinica(光子学报), 2012, 41(2): 232.
[14] ZHAO Min-jie, ZOU Ying, SI Fu-qi, et al(赵敏杰，邹 莹，司福祺，等). Spectroscopy and Spectral Analysis(光谱学与光谱分析), 2015, 35(9): 2578. |
| [1] |
LI Xin-quan1, 2，ZHANG Jun-qiang1, 3*，WU Cong-jun1，MA Jian1, 2，LU Tian-jiao1, 2，YANG Bin3. Optical Design of Airborne Large Field of View Wide Band Polarization Spectral Imaging System Based on PSIM[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2024, 44(01): 250-257. |
| [2] |
PAN Ke-yu1, 2, ZHU Ming-yao1, 2, WANG Yi-meng1, 2, XU Yang1, CHI Ming-bo1, 2*, WU Yi-hui1, 2*. Research on the Influence of Modulation Depth of Phase Sensitive
Detection on Stimulated Raman Signal Intensity and
Signal-to-Noise Ratio[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2023, 43(04): 1068-1074. |
| [3] |
JIANG Jun1, 2, YAO Zhi-gang1, 2*. Dynamic Detection and Correction for Abnormal Response of CCD Pixels in Spaceborne Low-Light Imager[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2023, 43(04): 1175-1182. |
| [4] |
LIU Ye-kun, HAO Xiao-jian*, YANG Yan-wei, HAO Wen-yuan, SUN Peng, PAN Bao-wu. Quantitative Analysis of Soil Heavy Metal Elements Based on Cavity
Confinement LIBS Combined With Machine Learning[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2022, 42(08): 2387-2391. |
| [5] |
WANG Yue1, 3, 4, CHEN Nan1, 2, 3, 4, WANG Bo-yu1, 5, LIU Tao1, 3, 4*, XIA Yang1, 2, 3, 4*. Fourier Transform Near-Infrared Spectral System Based on Laser-Driven Plasma Light Source[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2022, 42(06): 1666-1673. |
| [6] |
YAN Hua1, LIU Xing-hua2, DING Yong3, ZHAO Zhi1, LUO Yong-feng1, WU Yu-hong1, YAN Peng1, DONG Lu1, WANG Da-xi4. Instantaneous Emission Spectra and Mechanism Study on the Reaction of ClF3O and n-Decane[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2022, 42(05): 1522-1528. |
| [7] |
YANG Yu-qing1, CAI Jiang-hui1, 2*, YANG Hai-feng1*, ZHAO Xu-jun1, YIN Xiao-na1. LAMOST Unknown Spectral Analysis Based on Influence Space and Data Field[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2022, 42(04): 1186-1191. |
| [8] |
HU Li-hong1, ZHANG Jin-tong1, WANG Li-yun2, ZHOU Gang3, WANG Jiang-yong1*, XU Cong-kang1*. Optimization of Working Parameters of Glow Discharge Optical Emission Spectrometry of High Barrier Aluminum Plastic Film[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2022, 42(03): 954-960. |
| [9] |
ZHU Yu-xuan1,2, LU Jing-bin1, ZHAO Xiao-fan2, LIU Xiao-yan4, CUI Wei-wei2, LI Wei2, WANG Yu-sa2, LÜ Zhong-hua2, 3, CHEN Yong2*. An Application of Lucy Richardson Iterative in X-Ray Fluorescence Analysis[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2021, 41(09): 2823-2828. |
| [10] |
CUI Fang-xiao1, ZHAO Yue2, MA Feng-xiang2, WU Jun1*, WANG An-jing1, LI Da-cheng1, LI Yang-yu1. Optimization of FTIR Passive Remote Sensing Signal-to-Noise Ratio and Its Application in SF6 Leak Detection in Transform Substation[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2021, 41(05): 1436-1440. |
| [11] |
WANG Jing-jing1, 2, TAN Tu1*, WANG Gui-shi1, ZHU Gong-dong1, XUE Zheng-yue1, 2, LI Jun1, 2, LIU Xiao-hai1, 2, GAO Xiao-ming1, 2. Research on All-Fiber Dual-Channel Atmospheric Greenhouse Gases Laser Heterodyne Detection Technology[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2021, 41(02): 354-359. |
| [12] |
SUN Ran, HAO Xiao-jian*, YANG Yan-wei, REN Long. Effect of Cavity Confinement Materials on Laser-Induced Breakdown Cu Plasma Spectroscopy[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2020, 40(12): 3801-3805. |
| [13] |
LI Ming, QIN Kai*, ZHAO Ning-bo, TIAN Feng, ZHAO Ying-jun. Study on the Relationship Between Black Soil Emissivity Spectrum and Total Potassium Content Based on TASI Thermal Infrared Data[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2020, 40(09): 2862-2868. |
| [14] |
ZHENG Guo-liang, ZHU Hong-qiu*, LI Yong-gang. Spectral Signal Denoising Algorithm Based on Improved LMS[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2020, 40(02): 643-649. |
| [15] |
LI Zhi-wei1, 2, SHI Hai-liang1, 2, LUO Hai-yan1, 2, XIONG Wei1, 2*. Study on the Relationship Between Apodization Function and Signal-to-Noise Ratio of Hyperspectral Spatial Interferogram[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2020, 40(01): 29-33. |
|
|
|
|
