A method tor auto-extraction of spectral lines based on convolution type of wavelet packet transformation
文献类型：期刊论文
| 作者 | Liu, ZT; Wu, FC ; Luo, AL; Zhao, YH
|
| 刊名 | SPECTROSCOPY AND SPECTRAL ANALYSIS
 |
| 出版日期 | 2006-02-01 |
| 卷号 | 26期号:2页码:372-376 |
| 关键词 | convolution type of wavelet packet local correlation algorithm astronomical spectra spectral line extraction |
| 英文摘要 | 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. |
| WOS标题词 | Science & Technology ; Technology |
| 类目[WOS] | Spectroscopy |
| 研究领域[WOS] | Spectroscopy |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000235638800044 |
| 公开日期 | 2015-12-24 |
| 源URL | [http://ir.ia.ac.cn/handle/173211/9280]  |
| 专题 | 自动化研究所_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. |
入库方式： OAI收割
来源：自动化研究所
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