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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, Lesheng2; Wang, WeiLian2
会议录名称Proceedings - 2010 3rd International Congress on Image and Signal Processing, CISP 2010
2010
卷号7
页码3064-3073
DOI10.1109/CISP.2010.5646168
产权排序第1完成单位
收录类别EI
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
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.
语种英语
学科领域天文学
出版者IEEE Computer Society
出版地445 Hoes Lane - P.O.Box 1331, Piscataway, NJ 08855-1331, United States
ISBN号978-1-4244-6513-2; 978-1-4244-6516-3
URL查看原文
归档日期2011-01-12
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文献类型会议论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/5703
专题射电天文研究组
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
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Dong L,Wang M,He JH,et al. The research for effects of window functions in radio astronomy[C]. 445 Hoes Lane - P.O.Box 1331, Piscataway, NJ 08855-1331, United States:IEEE Computer Society,2010:3064-3073.
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