Research on an Equal Wavelength Spectrum Reconstruction Method of Interference Imaging Spectrometer

doi:10.3964/j.issn.1000-0593(2016)03-0848-05

OPT OpenIR > 月球与深空探测技术研究室

	Research on an Equal Wavelength Spectrum Reconstruction Method of Interference Imaging Spectrometer
其他题名	干涉成像光谱仪等波长光谱重建方法研究
	Xie Pei-yue 1,2; Yang Jian-feng1 ; Xue Bin1 ; Lu Juan 1; He Ying-hong 1; Li Ting 1; Ma Xiao-long 1
作者部门	月球与深空探测技术研究室
	2016-03-01
发表期刊	SPECTROSCOPY AND SPECTRAL ANALYSIS
ISSN	1000-0593
卷号	36 期号:3 页码:848-852
产权排序	1
摘要	Interference imaging spectrometer is one of the most important equipments of Chang'E 1 satellite, which is applied to analysis the material composition and its distribution of the surface on the moon. At present, the spectral resolution of level 2B scientific data obtained by existing methods is 325 cm(-1). If we use the description way of wavelength resolution, various spectrum is different; the first band is 7.6 nm, the last band is 29 nm, which introduces two questions: (1) the spectral resolution description way mismatch with the way of ground spectral library used for calibration and comparison; (2) The signal-to-noise ratio of the spectra in the shortwave band is low due to the signal entering narrow band is little. This paper discussed the relationship between wavelength resolution and cut-off function based on the reconstruction model of CE-1 interference imaging spectrometer. It proposed an adjustable cut-off function changing with wavelength or wavelength resolution, while selected the appropriate Sinc function as apodization to realize the reconstruction of arbitrary specified wavelength resolution in the band coverage. Then we used this method to CE-1 on orbit OB data to get a spectral image of 29 nm wavelength resolution. Finally, by using the signal-to-noise ratio, principal component analysis and unsupervised classification method on the reconstruction results with 2 grade science data from ground application system for comparison, the results showed that: signal-to-noise ratio of the shortwave band increased about 4 times, and the average increased about 2.4 times, the classification based on the spectrum was consistent, and the quality of the data was greatly improved. So, EWSR method has the advantages that: (1) in the case of keeping spectral information steadiness, it can improve the signal-to-noise ratio of shortwave band spectrum though sacrificed part of spectral resolution; (2) it can achieve the spectral data reconstruction which can set arbitrary band position or specify any wavelength resolution within the band range.
文章类型	Article
关键词	Chang' E-1 Interference Imaging Spectrometer Equal Wavelength Spectrum Resolution Spectral Reconstruction Fourier Transform
WOS标题词	Science & Technology ; Technology
DOI	10.3964/j.issn.1000-0593(2016)03-0848-05
收录类别	SCI ; EI
关键词[WOS]	CHANGE-1
语种	中文
WOS研究方向	Spectroscopy
WOS类目	Spectroscopy
WOS记录号	WOS:000372478000045
引用统计	被引频次：2[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.opt.ac.cn/handle/181661/28082
专题	月球与深空探测技术研究室
作者单位	1.Chinese Acad Sci, Xian Inst Opt & Precis Mech, Xian 710119, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Xie Pei-yue,Yang Jian-feng,Xue Bin,et al. Research on an Equal Wavelength Spectrum Reconstruction Method of Interference Imaging Spectrometer[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS,2016,36(3):848-852.
APA	Xie Pei-yue.,Yang Jian-feng.,Xue Bin.,Lu Juan.,He Ying-hong.,...&Ma Xiao-long.(2016).Research on an Equal Wavelength Spectrum Reconstruction Method of Interference Imaging Spectrometer.SPECTROSCOPY AND SPECTRAL ANALYSIS,36(3),848-852.
MLA	Xie Pei-yue,et al."Research on an Equal Wavelength Spectrum Reconstruction Method of Interference Imaging Spectrometer".SPECTROSCOPY AND SPECTRAL ANALYSIS 36.3(2016):848-852.

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