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

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.

关键词： Short time Fourier transform Time-frequency resolution Multi-window function

作者: Lihua Wang Qidong Zhang Yonghong Zhang Kai Zhang

作者单位: College of Information and Control Engineering,Nanjing University of Information Science and Technology,Nanjing 210044,China

会议类型: 国际会议

会议名称: the 2011 International Conference on Key Engineering Materials(ICKEM 2011)(2011关键工程材料国际会议)

会议地点: 三亚

会议语种:英文

页码: 122-127

在线出版日期: 2011-03-25（万方平台首次上网日期，不代表论文的发表时间）