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

Journal of Shanghai Jiao Tong University (Science)››2018,Vol. 23››Issue (6): 798-802.doi:10.1007/s12204-018-1967-0

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

LIN Haibo (林海波), GAO Zhibin (高志彬), YI Chuijie (仪垂杰), LIN Tianran (林天然)

(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)
(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)

Online:2018-12-01Published:2018-12-07
Contact:LIN Tianran (林天然) E-mail: trlin888@163.com

Abstract

Abstract: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.

Key words:non-stationary signals | time-frequency analysis | multi-rate decomposition | Wigner-Ville distribution (WVD)

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.

关键词:non-stationary signals | time-frequency analysis | multi-rate decomposition | Wigner-Ville distribution (WVD)

CLC Number:

TB 52

LIN Haibo (林海波), GAO Zhibin (高志彬), YI Chuijie (仪垂杰), LIN Tianran (林天然). Simulation Study on Multi-Rate Time-Frequency Analysis of Non-Stationary Signals[J]. Journal of Shanghai Jiao Tong University (Science), 2018, 23(6): 798-802.

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