| 光谱学与光谱分析 |
|
|
|
|
|
| Application of Over Sampling ∑-ΔA/D in DOAS System |
| LI Su-wen1,2, LIU Wen-qing1, XIE Pin-hua1 |
| 1. Key Laboratory of Environmental Optical and Technology, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031, China2. Department of Physics, Huaibei Coal Teachers College, Huaibei 235000, China |
|
|
|
|
Abstract Differential optical absorption spectroscopy (DOAS) has become a widely used method to measure trace gases in the atmosphere. Concentration of trace gases is retrieved using least-squares fits of reference spectra to the measurement spectra. The measurement precision not only depends on the measurement precision of spectra and the noise of instrument and disturbing of other gases in measuring band, but suffers the influence of signal sampling and pre-processing. The present paper simply introduced DOAS measuring principle and the setup of instrument and put forward improving method-the technology of over sampling ∑-ΔA/D. Using the ∑-Δ modulator structure to shape noises together with the over sampling technology can doubly restrain quantifying noises, which can improve the signal-to-noise ratio within the measuring band. So the measurement precision of DOAS system is improved with this technology.
|
|
Received: 2005-11-16
Accepted: 2006-03-29
|
|
|
|
Corresponding Authors:
LI Su-wen
|
|
[1] Platt U, Perner D. Geophys. Res., 1979, 84(10): 6329.
[2] Platt U, Perner D, Geophys. Res., 1980, 85(12):7453.
[3] Noxon J F. Science, 1975, 189: 547.
[4] QIN Min, XIE Pin-hua, LIU Jian-guo, et al(秦 敏，谢品华，刘建国, 等). Spectroscopy and Spectral Analysis(光谱学与光谱分析), 2005, 25(9): 1463.
[5] ZHOU Bin, LIU Wen-qing, QI Feng, et al(周 斌，刘文清，齐 锋, 等). The Research of Environment Sciences(环境科学研究), 2001, 14(5): 23.
[6] ZHOU Bin, LIU Wen-qing, QI Feng, et al(周 斌，刘文清，齐 锋, 等). Acta Optic Sinica(光学学报), 2002, 22(8): 957.
[7] Tan N, Ericsson S, Wanhammer L. Proc. IEEE Int. Symp. Circ. and Syst., CISCA’94. UK: London. 1994, 259.
|
| [1] |
LIU Yuan-yuan1, CHEN Jian-jun2, QIU Bo1*, FAN Xiao-dong1, WEI Shi-ya1, SONG Tao1, DUAN Fu-qing3*. A Processing Method for Low SNR Repetitive Observation Spectrum[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2018, 38(07): 2311-2314. |
| [2] |
LI Xiao-nan1, LIU Guo-qiang1, 2, HU Li-li1. Research on Nuclear Magnetic Resonance High-Quality Detection[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2018, 38(05): 1358-1361. |
| [3] |
WANG Xin*, HE Hao, FAN Xian-guang, TANG Ming. Signal Processing Method for Raman Spectra Based on Matching Pursuit[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2018, 38(01): 93-98. |
| [4] |
SUN Jian-zhong1,2, ZHANG Le2*, GAO Fei1, LI Jiu-sheng1. Quality Improvement and Noise Reduction of Terahertz Continuous Wave Imaging[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2017, 37(11): 3343-3346. |
| [5] |
RAO Zhi-min, HUA Deng-xin, HE Ting-yao*, WANG Qiang, LE Jing. Performance Analysis of Double Wavelength Fluorescence Lidar in Detecting Atmospheric Biological Aerosols[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2017, 37(09): 2804-2808. |
| [6] |
WANG Huan1,2, WANG Yong-zhi1, ZHAO Yu1, ZHU Li1, YIN Li-hui1*. Latest Methods of Fluorescence Suppression in Raman Spectroscopy[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2017, 37(07): 2050-2056. |
| [7] |
LI Su-wen, MO Fu-sheng, SHI Rui-rui, WEN Min-hong. Extinction Coefficient Measurement of Atmospheric Particles with Differential Optical Absorption Spectroscopy[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2017, 37(06): 1930-1933. |
| [8] |
LIANG Zhen-jiang, LIU Hai-xia*, LIU Kai-ming, NIU Yan-xiong, YIN Yi-heng . The Analysis of Microcavity-Integrated Graphene Photodetector’s SNR Based on 1.06 μm [J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2017, 37(02): 356-360. |
| [9] |
WANG Yu-tian, YANG Zhe, HOU Pei-guo*, CHENG Peng-fei, CAO Li-fang . Research on Spectroscopy Spectrum De-Noising of Mineral Oil Based on Lifting Scheme Wavelet Transform [J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2016, 36(07): 2144-2147. |
| [10] |
LIU Yu-li1,2, XIE Chen-bo1*, SHANG Zhen1, ZHAO Ming1, CAO Kai-fa1, SUN Yue-sheng2. Retrieval and Analysis of Atmospheric Temperature Using a Rotational Raman Lidar Observation[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2016, 36(06): 1978-1986. |
| [11] |
Lü Jin-guang1, LIANG Jing-qiu1, LIANG Zhong-zhu1*, TIAN Chao1, 2, QIN Yu-xin1. Analysis and Design of Interference Imaging System in Fourier Transform Imaging Spectrometer Based on Multi-Micro-Mirror[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2016, 36(05): 1554-1559. |
| [12] |
LI Wen-chao2, MENG Xiao-yun1, PIAO Rui-qi1, ZHAO Jing-jing1, LI Zhi-quan1*, TONG Kai1, GU Er-dan1 . Brand-New Ge20Ga5Sb10S65 Prism Biosensor Based on Inverted SPR [J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2016, 36(02): 571-576. |
| [13] |
XIU Lian-cun1, 2, 3, ZHENG Zhi-zhong1, 2, 3, YIN Liang1, 2, 3, CHEN Chun-xia1, 2, 3, YU Zheng-kui1, 2, 3, HUANG Bin1, 2, 3, ZHANG Qiu-ning1, 2, 3, XIU Xiao-xu4，GAO Yang1, 2, 3. Research on Assessment Methods of Spectrum Data Quality of Core Scan [J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2015, 35(08): 2352-2356. |
| [14] |
LI Yan1, 2, GAO Min-guang1, XU Liang1*，LI Sheng1，LI Xiang-xian1，YE Shu-bin1, 2，LIU Jian-guo1. Infrared Spectroscopy Application based on Trigger Sampling Method and Phase Correction[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2015, 35(07): 2054-2059. |
| [15] |
ZHENG Hai-ming, LI Guang-jie, WU Hao . Study on Differential Optical Absorption Spectroscopy Data Processing Based on Chirp-Z Transformation[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2015, 35(06): 1633-1638. |
|
|
|
|
