Reconstruction of Stack Plume Based on Imaging Differential Absorption Spectroscopy and Compressed Sensing

doi:10.3964/j.issn.1000-0593(2021)06-1708-05

	Reconstruction of Stack Plume Based on Imaging Differential Absorption Spectroscopy and Compressed Sensing
	Zhong Ming-yu 1,2,3; Zhou Hai-jin 2; Si Fu-qi 2; Wang Yu 2; Dou Ke 2; Su Jing-ming 1,2,3
刊名	SPECTROSCOPY AND SPECTRAL ANALYSIS
	2021-06-01
卷号	41
关键词	Imaging differential optical absorption spectrometer Spectral absorption by atmospheric gases Computed tomography Compressed sensing
ISSN号	1000-0593
DOI	10.3964/j.issn.1000-0593(2021)06-1708-05
通讯作者	Si Fu-qi(sifuqi@aiofm.ac.cn)
英文摘要	The quality of computed tomography image of stack plume has two limits. One of the limitations is the temporal resolution of data acquisition of remote sensing instrument. The conventional remote sensing instrument used for tomography is an multi-axis differential optical absorption spectrometer. Limited by its' speed of data acquisition, the temporal resolution of the reconstructed image is low. The other limitation is the insufficient data acquired from remote sensing instruments. Algebraic reconstruction algorithms and iterative statistical algorithms are usually used in the reconstruction, but the reconstructed images have a low resolution and plenty of artifacts. To overcome the first limitation, data acquisition system in this paper is composed of imaging differential optical absorption spectrum technique. Compared with the system composed of the multi-axis differential optical absorption spectrum, the system's temporal resolution increases above 160 times. An algorithm based on compressed sensing and a low third derivative model is introduced to overcome the second limitation. The algorithm is called projection on convex sets-low the third derivative method, which is POCS-LTD in short. The proposed algorithm belongs to gradient projection for sparse reconstruction algorithms, which is divide into two steps: projection and total variation iteration. In the process of projection, the algebraic reconstruction algorithm is used to make the reconstructed image conform to the projection equation, and the optimization algorithm is used in the process of total variation iteration. In the process of the total variation, the normalized value of the low third order derivative model is used as the iterative direction of the optimization algorithm, and the module of the difference between the result of the previous iteration and the present projection operation is used as the iterative step. According to nearness, the reconstructed images are evaluated, the relative difference of maximum and concordance correlation factor by numerical simulation. The numerical simulation shows that the proposed algorithm has good error resist, and reduces nearness by 80% compared with the traditional low third derivative method. The method is used to reconstruct the plume by the data gets from the field campaign. A clear plume and suppression of artifacts can be seen from the reconstructed image. The data acquisition system and algorithm introduced in this paper promote temporal resolution and reduce artifacts of the reconstructed images, and improve the technique's practicability.
WOS关键词	TOMOGRAPHY ; EMISSIONS
WOS研究方向	Spectroscopy
语种	英语
出版者	OFFICE SPECTROSCOPY & SPECTRAL ANALYSIS
WOS记录号	WOS:000671195700008
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/124254]
专题	中国科学院合肥物质科学研究院
通讯作者	Si Fu-qi
作者单位	1.Anhui Univ Sci & Technol, Coll Elect & Informat Engn, Huainan 232001, Peoples R China 2.Chinese Acad Sci, Anhui Inst Opt & Fine Mech, Hefei 230031, Peoples R China 3.Univ Sci & Technol China, Hefei 230031, Peoples R China
推荐引用方式 GB/T 7714	Zhong Ming-yu,Zhou Hai-jin,Si Fu-qi,et al. Reconstruction of Stack Plume Based on Imaging Differential Absorption Spectroscopy and Compressed Sensing[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS,2021,41.
APA	Zhong Ming-yu,Zhou Hai-jin,Si Fu-qi,Wang Yu,Dou Ke,&Su Jing-ming.(2021).Reconstruction of Stack Plume Based on Imaging Differential Absorption Spectroscopy and Compressed Sensing.SPECTROSCOPY AND SPECTRAL ANALYSIS,41.
MLA	Zhong Ming-yu,et al."Reconstruction of Stack Plume Based on Imaging Differential Absorption Spectroscopy and Compressed Sensing".SPECTROSCOPY AND SPECTRAL ANALYSIS 41(2021).