[1]邵理堂,汤光华,许传龙,等.利用小波变换消除颗粒物Mie散射对DOAS技术的影响[J].东南大学学报(自然科学版),2008,38(3):444-448.[doi:10.3969/j.issn.1001-0505.2008.03.016]
 Shao Litang,Tang Guanghua,Xu Chuanlong,et al.Eliminating Mie scattering influence of particles on DOAS technique using wavelet transform[J].Journal of Southeast University (Natural Science Edition),2008,38(3):444-448.[doi:10.3969/j.issn.1001-0505.2008.03.016]
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利用小波变换消除颗粒物Mie散射对DOAS技术的影响()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
38
期数:
2008年第3期
页码:
444-448
栏目:
其他
出版日期:
2008-05-20

文章信息/Info

Title:
Eliminating Mie scattering influence of particles on DOAS technique using wavelet transform
作者:
邵理堂12 汤光华1 许传龙1 王式民1
1 东南大学能源与环境学院, 南京 210096; 2 淮海工学院理学院, 连云港 222005
Author(s):
Shao Litang12 Tang Guanghua1 Xu Chuanlong1 Wang Shimin1
1 School of Energy and Environment, Southeast University, Nanjing 210096, China
2 College of Science, Huaihai Institute of Technology, Lianyungang 222005, China
关键词:
差分吸收光谱 多项式滤波 小波变换 Mie散射 浓度反演
Keywords:
differential optical absorption spectroscopy polynomial filter wavelet transform Mie scattering concentration inversion
分类号:
TB934
DOI:
10.3969/j.issn.1001-0505.2008.03.016
摘要:
为消除烟气中颗粒物Mie散射对差分吸收光谱(DOAS)法反演气体浓度的影响,提出了多项式结合小波变换的滤波方法.数值研究结果表明:对不同的颗粒物浓度和不同的气体浓度,采用该滤波方法都能够大幅度降低气体浓度的反演误差,且小波变换的层数随颗粒物浓度的增加而增加.实验研究表明:基于该滤波方法的DOAS技术,对0~1 377.2 mg/m3范围内的SO2气体,其浓度反演误差大都在10%以内,零点漂移由50.96 mg/m3降为9.96 mg/m3,提高了DOAS技术的测量精度.
Abstract:
A new filtering method of polynomial combining with wavelet transform is introduced in order to eliminate the influence of Mie scattering of particles on differential optical absorption spectroscopy(DOAS). Numerical research results show that for different concentrations of dust particles and gases, the DOAS based on the filtering method can be used to realize the accurate measurement of gas concentration. Also, it is advised that the layers of wavelet transform should be increased with the increasing concentration of dust particles. Experimental research results show that the error of SO2 inversion is less than 10% with the concentration range of 0 to 1 377.2 mg/m3 by applying the DOAS technique based on the filtering method. Zero drift of the improved DOAS system is reduced to 9.96 mg/m3from 50.96 mg/m3 and therefore, the accuracy of the system is greatly improved.

参考文献/References:

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备注/Memo

备注/Memo:
作者简介: 邵理堂(1965—),男,博士生,副教授; 王式民(联系人),男,教授,博士生导师, smwang@seu.edu.cn.
基金项目: 国家自然科学基金资助项目(50576010)、教育部博士点基金资助项目(20040286038).
引文格式: 邵理堂,汤光华,许传龙,等.利用小波变换消除颗粒物Mie散射对DOAS技术的影响[J].东南大学学报:自然科学版,2008,38(3):444-448.
更新日期/Last Update: 2008-05-20