| 光谱学与光谱分析 |
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| Comparison of Different Template Matching Methods of Automatic Stellar Spectrum Parameter Measurement |
| LIU Jie1, PAN Jing-chang1*, LIU Meng1, WEI Peng2, LUO A-li2 |
1. School of Mechanical, Electrical & Information Engineering, Shandong University at Weihai, Weihai 264209, China
2. Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, China |
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Abstract Template matching is one of the most commonly used methods of automatic stellar spectrum parameter measurement. The present paper made comparisons among the three commonly used template matching methods K-Nearest Neighbor (KNN), the Chi-square minimization and cross correlation method. The Continuum normalization and flux normalization were made first. Then the three mentioned methods were compared in measurement results of stellar spectrum parameters. Experiments on SDSS DR8 large sample spectra showed that the cross correlation method had comparable advantages.
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Received: 2012-06-03
Accepted: 2012-08-12
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Corresponding Authors:
PAN Jing-chang
E-mail: pjc@sdu.edu.cn
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