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Title: Application of EMD to signal trend extraction
Authors: Chen, J
Xu, Y 
Keywords: Empirical mode decomposition
Intermittency check
Vibration signal
Issue Date: 2005
Publisher: 南京航空航天大學
Source: 振動, 測試與診斷 (Journal of vibration, measurement & diagnosis), 2005, v. 25, no. 2, p. 101-104 How to cite?
Journal: 振動, 測試與診斷 (Journal of vibration, measurement & diagnosis) 
Abstract: This paper investigates the application of empirical mode decomposition (EMD) to signal trend extraction. EMD can decompose any signal into sum of intrinsic mode functions (IMF) plus a residual. Thus, the signal trend is defined as the residual or sum of several IMF components whose frequency content is lower than a given value. Both simulated and field measured signal are employed in this study to demonstrate the feasibility of the approach. The results show that the trend can be extracted directly from the measured signal using the EMD approach without any presumptions of the trend type. It is concluded that the EMD approach is a promising tool for signal trend extraction.
ISSN: 1004-6801
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