Wavelet cleaning of solar dynamic radio spectrograms

	Wavelet cleaning of solar dynamic radio spectrograms
	Sych, RA ; Yan, YH
刊名	CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS
	2002-04-01
卷号	2 期号:2 页码:183-192
关键词	Sun : radio radiation methods : data analysis
英文摘要	By applying the state-of-the-art mathematical apparatus, the wavelet transformation, we explore the possibility of a dynamic cleaning of raw data obtained with the Chinese solar radio spectrographs over a wide wavelength range (from 0.7 to 7.6 GHz). We consider the problem of eliminating the interference caused by combination rates of data sampling (10-20 ms), and the low-frequency interference (4-30 s) caused by the receiving equipment changing its characteristics with time. It is shown that the best choice to reconstruct a signal suffering from amplitude, frequency and phase instabilities, is by means of wavelet transformation at both high and low frequencies. We analysed observational data which contained interferences of nonsolar origin such as instrumental effects and other man-made signals. A subsequent comparison of the reference data obtained with the acousto-optical receiver of the Siberian Solar Radio Telescope (SSRT) with the "cleaned" spectra confirms the correctness of this approach.
收录类别	SCI
语种	英语
WOS记录号	WOS:000175150900012
内容类型	期刊论文
源URL	[http://ir.bao.ac.cn/handle/114a11/8498]
专题	国家天文台_太阳物理研究部
作者单位	1.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China 2.Russian Acad Sci, Inst Solar Terr Phys, Irkutsk 664033, Russia
推荐引用方式 GB/T 7714	Sych, RA,Yan, YH. Wavelet cleaning of solar dynamic radio spectrograms[J]. CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS,2002,2(2):183-192.
APA	Sych, RA,&Yan, YH.(2002).Wavelet cleaning of solar dynamic radio spectrograms.CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS,2(2),183-192.
MLA	Sych, RA,et al."Wavelet cleaning of solar dynamic radio spectrograms".CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS 2.2(2002):183-192.