| 基于分形编码的天体光谱降噪方法 |
| |
| 作者姓名： | Han JS Luo AL Zhao YH |
| |
| 作者单位： | 1. 中国科学院天文光学重点实验室(国家天文台),北京100012;中国科学院研究生院,北京100049;德州学院计算机系,山东德州253020
2. 中国科学院天文光学重点实验室(国家天文台),北京,100012 |
| |
| 基金项目： | 国家自然科学基金项目(10973021)资助 |
| |
| 摘 要： | 为了降低噪声影响,恢复光谱的连续谱和谱线等主要特征,以便准确测量谱线的等值宽度,文章根据天体光谱自身具有局部自相似性,而随机白噪声不具有自相似性,首次将分形方法应用于天体光谱降噪.实验表明,分形降噪方法对于准确测量谱线的等值宽度、星系红移等参数是有效的,此外,还可以实现数据压缩.分形方法适用于海量光谱的降噪和数据存储.
|
| 关 键 词： | 天体光谱 分形 降噪 等值宽度 |
A fractal denoising method for astronomical spectral signal |
| |
| Han JS,Luo AL,Zhao YH.A fractal denoising method for astronomical spectral signal[J].Spectroscopy and Spectral Analysis,2011,31(12):3399-3402. |
| |
| Authors: | Han Jin-shu Luo A-li Zhao Yong-heng |
| |
| Institution: | HAN Jin-shu1,2,3,LUO A-li1,ZHAO Yong-heng1 1.Key Laboratory of Optical Astronomy,National Astronomical Observato ries,Chinese Academy of Sciences,Beijing 100012,China 2.Graduate University of Chinese Academy of Sciences,Beijing 100049,China 3.Department of Computer Science and Technology,Dezhou University,Dezhou 253020,China |
| |
| Abstract: | To restore the continuum and the spectral lines from a noisy astronomical spectrum,then to measure the equivalentwidths of the spectral lines,the fractal denoising method was firstly used in astronomical spectra in the present paper.Themethod is based on the distinguishing features,that is the local self-similarities exist in an astronomical spectrum,while not in arandom white noise signal.The experimental results show that the fractal denoising method is efficient in parameter measure-ments,such as equival... |
| |
| Keywords: | Astronomical spectra Fractal Denoising Equivalent width |
| 本文献已被 CNKI 万方数据 PubMed 等数据库收录！ |
|
