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Red Shift Determination and Spectral Line Identification Based on Knowledge
基于知识的红移测量和谱线证认方法

Keywords: Spectral analysis,Redshift determination,Spectral line identification,Density estimate
光谱分析
,红移测量,谱线证认,密度估计

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Abstract:

A novel method for redshift determination and spectral line identification of celestial spectra is presented, which is based on the knowledge of feature spectral lines. Firstly, definition of redshift candidate and feature spectral line candidate is given, and the candidates are cross-validated according to the definition; Secondly, the density is estimated at every redshift candidate by using the Parzen window technique; Finally, the average of redshift candidates in Parzen window of the redshift candidate with maximum density is the redshift, and the feature spectral line candidates corresponding to those redshift candidates are feature spectral lines. Compared with other methods of the same kind, this method has a lower dependence on the quality of spectral line extraction. Experiments show that this method is robust and the correct rate is encouraging.

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