A method tor auto-extraction of spectral lines based on convolution type of wavelet packet transformation

CASIA OpenIR > 09年以前成果

	A method tor auto-extraction of spectral lines based on convolution type of wavelet packet transformation
	Liu, ZT ; Wu, FC; Luo, AL ; Zhao, YH
发表期刊	SPECTROSCOPY AND SPECTRAL ANALYSIS
	2006-02-01
卷号	26 期号:2 页码:372-376
文章类型	Article
摘要	The important astrophysical information is hidden in spectral lines of astronomical spectra. The presen paper presents a method for auto-extraction of spectral lines based on convolution type of wavelet packet. This method consists of four main steps: First, the observed spectra are transformed by convolution type of wavelet packet with 4(th) scale. Then, the noise with coefficients of the 4(th) scale is eliminated by the local correlation algorithm and threshold in the wavelet packet domain. After that, middle and high frequency coefficients are selected to reconstruct the feature of the spectral lines. Finally, with the reconstructed feature of the spectral lines, spectral lines in observed spectra are searched. The results of our experiments, which include the spectral lines of stars, normal galaxies and active galaxies, show that the method can robustly and accurately extract the spectral lines. The method was applied to extract the SDSS spectral lines and compute the redshifts with those lines. By comparing the redshifts with those given by SDSS, the extraction has proven successful and practical.
关键词	Convolution Type Of Wavelet Packet Local Correlation Algorithm Astronomical Spectra Spectral Line Extraction
WOS标题词	Science & Technology ; Technology
收录类别	SCI
语种	英语
WOS研究方向	Spectroscopy
WOS类目	Spectroscopy
WOS记录号	WOS:000235638800044
引用统计	被引频次：5[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ia.ac.cn/handle/173211/9280
专题	09年以前成果
作者单位	1.Chinese Acad Sci, Inst Automat, Natl Lab Pattern Recognit, Beijing 100080, Peoples R China 2.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China
推荐引用方式 GB/T 7714	Liu, ZT,Wu, FC,Luo, AL,et al. A method tor auto-extraction of spectral lines based on convolution type of wavelet packet transformation[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS,2006,26(2):372-376.
APA	Liu, ZT,Wu, FC,Luo, AL,&Zhao, YH.(2006).A method tor auto-extraction of spectral lines based on convolution type of wavelet packet transformation.SPECTROSCOPY AND SPECTRAL ANALYSIS,26(2),372-376.
MLA	Liu, ZT,et al."A method tor auto-extraction of spectral lines based on convolution type of wavelet packet transformation".SPECTROSCOPY AND SPECTRAL ANALYSIS 26.2(2006):372-376.