NDLI: The research for effects of window functions in radio astronomy

Content Provider	IEEE Xplore Digital Library
Author	Liang Dong Min Wang Jinhua He Zhixuan Li Lesheng He WeiLian Wang
Copyright Year	2010
Description	Author affiliation: School of Information ScieHence and Engineering, Yunnan University, Kunming 650091 China (Lesheng He; WeiLian Wang) \|\| Radio astronomy research group, Yunnan Observatory of Chinese Academy Science, Kunming 650011 China (Liang Dong; Min Wang; Jinhua He; Zhixuan Li)
Abstract	Index: 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.
Starting Page	3064
Ending Page	3073
File Size	1843162
Page Count	10
File Format	PDF
ISBN	9781424465132
e-ISBN	9781424465163
DOI	10.1109/CISP.2010.5646168
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-10-16
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Radio astronomy DFT Window functions Discrete Fourier transforms Noise radio astronomy Signal processing algorithms Bandwidth Signal resolution Frequency domain analysis
Content Type	Text
Resource Type	Article

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