The research for effects of window functions in radio astronomy

	The research for effects of window functions in radio astronomy
	Dong L(董亮)1 ; Wang M(汪敏)1 ; He JH(何金华)1 ; Li ZX(李志玄)1 ; He, Lesheng 2; Wang, WeiLian 2
	2010
会议名称	2010 3rd International Congress on Image and Signal Processing, CISP 2010
会议日期	2010-10-16
会议地点	Yantai, China
关键词	Window functions DFT radio astronomy
卷号	7
页码	3064-3073
英文摘要	In radio astronomy, DFT (Discrete Fourier Transformation) is usually used to analyze radio sources. The window functions play important roles in DFT, They determines spectra's main-lobe width and leakages, and then affect observation results. In this paper, at first we discuss the different window functions in DFT algorithm, including their main-lobe widths, peak side lobe levels, and so on. And then, we discuss three kinds of signals in radio astronomy and their different processing methods. At last, we get a conclusion that different signals analyzing must choose the corresponding window function for reducing the window functions' effects.
收录类别	EI
产权排序	第1完成单位
会议网址	http://ieeexplore.ieee.org/document/5646168/
会议录	Proceedings - 2010 3rd International Congress on Image and Signal Processing, CISP 2010
会议录出版者	IEEE Computer Society
会议录出版地	445 Hoes Lane - P.O.Box 1331, Piscataway, NJ 08855-1331, United States
学科主题	天文学
语种	英语
ISBN号	978-1-4244-6513-2; 978-1-4244-6516-3
内容类型	会议论文
源URL	[http://ir.ynao.ac.cn/handle/114a53/5703]
专题	云南天文台_射电天文研究组
作者单位	1.Radio astronomy research group, Yunnan Observatory of Chinese Academy Science, Kunming 650011 China 2.School of Information ScieHence and Engineering, Yunnan University, Kunming 650091 China
推荐引用方式 GB/T 7714	Dong L,Wang M,He JH,et al. The research for effects of window functions in radio astronomy[C]. 见:2010 3rd International Congress on Image and Signal Processing, CISP 2010. Yantai, China. 2010-10-16.http://ieeexplore.ieee.org/document/5646168/.