Simulation Study on Multi-Rate Time-Frequency Analysis of Non-Stationary Signals  

作　　者：LIN Haibo GAO Zhibin YI Chuijie LIN Tianran 林海波;高志彬;仪垂杰;林天然(School of Mechanical and Automotive Engineering,Qingdao University of Technology;College of Automation and Electrical Engineering, Qingdao University)

机构地区：[1]School of Mechanical and Automotive Engineering,Qingdao University of Technology,Qingdao 266520,Shandong,China [2]College of Automation and Electrical Engineering,Qingdao University,Qingdao 266424,Shandong,China

出　　处：《Journal of Shanghai Jiaotong university(Science)》2018年第6期798-802,共5页上海交通大学学报（英文版）

基　　金：the National Natural Science Foundation of China(No.61271387);the Shandong Provincial Government’s Taishan Scholar Program

摘　　要：A new time-frequency analysis method is proposed in this study using a multi-rate signal decomposition technique for the analysis of non-stationary signals. The method uses a multi-rate filter bank for an improved non-stationary signal decomposition treatment, and uses the Wigner-Ville distribution(WVD) analysis for signal reconstruction. The method presented in this study can effectively resolves the time and frequency resolution issue for non-stationary signal analysis and the cross-term issue typically encountered in time-frequency analysis.The feasibility and accuracy of the proposed method are evaluated and verified in a numerical simulation.A new time-frequency analysis method is proposed in this study using a multi-rate signal decomposition technique for the analysis of non-stationary signals. The method uses a multi-rate filter bank for an improved non-stationary signal decomposition treatment, and uses the Wigner-Ville distribution(WVD) analysis for signal reconstruction. The method presented in this study can effectively resolves the time and frequency resolution issue for non-stationary signal analysis and the cross-term issue typically encountered in time-frequency analysis.The feasibility and accuracy of the proposed method are evaluated and verified in a numerical simulation.

关 键 词：NON-STATIONARY SIGNALS TIME-FREQUENCY analysis MULTI-RATE DECOMPOSITION Wigner-Ville distribution (WVD) 

分 类 号：TB52[理学—物理]