The Time-Frequency Resolution of Short Time Fourier Transform Based on Multi-window Functions

被引：3
|
作者：
Wang, Lihua [1 ]
Zhang, Qidong [1 ]
Zhang, Yonghong [1 ]
Zhang, Kai [1 ]
机构：
[1] Nanjing Univ Informat Sci & Technol, Coll Informat & Control Engn, Nanjing 210044, Peoples R China
来源：
ADVANCES IN KEY ENGINEERING MATERIALS | 2011年 / 214卷
关键词：
Short time Fourier transform; Time-frequency resolution; Multi-window function;
D O I：
10.4028/www.scientific.net/AMR.214.122
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The short-time Fourier transform has the disadvantage that is does not localize time and frequency phenomena very well. Instead the time-frequency information is scattered which depends on the length of the window. It is not possible to have arbitrarily good time resolution simultaneously with good frequency resolution. In this paper, a new method that uses the short-time Fourier transform based on multi-window functions to enhance time-frequency resolution of signals has been proposed. Simulation and experimental results present the high performance of the proposed method.
引用
收藏
页码：122 / 127
页数：6
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