| 光谱学与光谱分析 |
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| A Novel Method for Continuum Normalization of Astronomical Spectrum Signals |
| ZHAO Rui-zhen1,LUO A-li2 |
1. School of Computer and Information Technology, Beijing Jiaotong University, Beijing 100044, China
2. National Astronomical Observatory, Chinese Academy of Sciences, Beijing 100012, China |
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Abstract A combined method of wavelet transform and spline fitting is presented for continuum fitting with the strong spectral lines taken out beforehand. Some comparisons between normal methods and the method presented are made by the experiments on actual spectra. And the experimental results show that our method is superior to others. Besides, an effective continuum revision formula is derived to avoid the appearance of negative continua obtained by some methods such as polynomial fitting and so on.
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Received: 2005-01-06
Accepted: 2005-04-26
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Corresponding Authors:
ZHAO Rui-zhen
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| Cite this article: |
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ZHAO Rui-zhen,LUO A-li. A Novel Method for Continuum Normalization of Astronomical Spectrum Signals[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2006, 26(03): 587-590.
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| URL: |
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http://www.gpxygpfx.com/EN/Y2006/V26/I03/587 |
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[4] Daubechies I. Ten Lectures on Wavelets. Philadelphia: SIAM, 1992.
[5] Mallat S，Hwang W L. IEEE Trans. on IT, 1992, 38(2): 617. |
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