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A Processing Method for Low SNR Repetitive Observation Spectrum

文献类型：期刊论文

作者Liu Yuan-yuan1; Chen Jian-jun2; Qiu Bo1; Fan Xiao-dong1; Wei Shi-ya1; Song Tao1; Duan Fu-qing3
刊名SPECTROSCOPY AND SPECTRAL ANALYSIS
出版日期2018-07-01
卷号38期号:7页码:2311-2314
关键词Repetitive observation spectrum Low SNR CCD noise sources Candidate for binary star
ISSN号1000-0593
DOI10.3964/j.issn.1000-0593(2018)07-2311-04
英文摘要At present, more than 7. 6 million celestial spectra has been obtained by the LAMOST spectrum sky surveys, and the processing of low SNR spectra has been regarded as a difficulty in this domain. In this paper, a new method was proposed to deal with repeated observation spectra. The process of the method was: for every group of repetitive observation spectra, selecting that whose difference of red shift was within a certain range, and then an optimal stack algorithm based on SNR weighting was run to increase the SNR. The results of the processing of all repetitive observation spectra in LAMOST DR4 showed that this method was very effective for increasing the SNR for low SNR repetitive observation spectra. This method made the SNR of the 7571 sets of stellar spectra reach the standard of parameter measurement; The SNR of the 3357 quasar and Galaxy spectra improved at an average improvement rate of 56. 38%; And 43021 binary candidate candidates were obtained.
WOS研究方向Spectroscopy
语种英语
WOS记录号WOS:000439671600052
出版者OFFICE SPECTROSCOPY & SPECTRAL ANALYSIS
源URL[http://ir.bao.ac.cn/handle/114a11/22238]  
专题中国科学院国家天文台
通讯作者Qiu Bo; Duan Fu-qing
作者单位1.Hebei Univ Technol, Tianjin 300401, Peoples R China
2.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China
3.Beijing Normal Univ, Beijing 100875, Peoples R China
推荐引用方式
GB/T 7714		 Liu Yuan-yuan,Chen Jian-jun,Qiu Bo,et al. A Processing Method for Low SNR Repetitive Observation Spectrum[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS,2018,38(7):2311-2314.
APA Liu Yuan-yuan.,Chen Jian-jun.,Qiu Bo.,Fan Xiao-dong.,Wei Shi-ya.,...&Duan Fu-qing.(2018).A Processing Method for Low SNR Repetitive Observation Spectrum.SPECTROSCOPY AND SPECTRAL ANALYSIS,38(7),2311-2314.
MLA Liu Yuan-yuan,et al."A Processing Method for Low SNR Repetitive Observation Spectrum".SPECTROSCOPY AND SPECTRAL ANALYSIS 38.7(2018):2311-2314.

入库方式： OAI收割

来源：国家天文台

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