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Time-frequency Analysis of Track Irregularity Based on Orthogonal Empirical Mode Decomposition

Journal from gdlhub / 2016-11-11 07:10:01
Oleh : Ling Zhao, Darong Huang, Honggang Wang, Hongtao Yu, Xiaoyan Chu, Telkomnika
Dibuat : 2016-09-01, dengan 1 file

Keyword : track irregularity, orthogonal empirical mode decomposition, Hilbert transform, time-frequency analysis
Url : http://journal.uad.ac.id/index.php/TELKOMNIKA/article/view/4400

A method of extracting transient features of a non-stationary signal was proposed based on the combination of orthogonal empirical mode decomposition (OEMD) and the Hilbert transform. After obtaining orthogonal intrinsic mode functions, the instantaneous frequency and amplitude can be calculated, so problems existing in the original Hilbert-Huang Transform（HHT）method, such as mode aliasing, can be solved. The track irregularity signal is studied with the OEMD method, and the statistical and analytic result indicates that there are relatively serious short wave and long wave

Deskripsi Alternatif :

A method of extracting transient features of a non-stationary signal was proposed based on the combination of orthogonal empirical mode decomposition (OEMD) and the Hilbert transform. After obtaining orthogonal intrinsic mode functions, the instantaneous frequency and amplitude can be calculated, so problems existing in the original Hilbert-Huang Transform（HHT）method, such as mode aliasing, can be solved. The track irregularity signal is studied with the OEMD method, and the statistical and analytic result indicates that there are relatively serious short wave and long wave

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