Please use this identifier to cite or link to this item:
Title: End-effect, stopping criterion, mode mixing and confidence limit for the Hilbert-Huang transform
Keywords: Hilbert-Huang transform, empirical mode decomposition, end-effect, stopping criterion, mode mixing, vortex-shedding
Issue Date: 3-Jul-2009
Citation: LANDEL JULIEN REMY DOMINIQUE GERARD (2009-07-03). End-effect, stopping criterion, mode mixing and confidence limit for the Hilbert-Huang transform. ScholarBank@NUS Repository.
Abstract: The Hilbert-Huang transform is a new and powerful signal-processing technique, which has greater capability than all other methods in analysing nonlinear and non-stationary signals. Firstly, the problem of end-effect is studied and four solutions are developed in the algorithm. Secondly, the stopping criterion of the sifting process is investigated. Thirdly, an intermittency test preventing mode mixing is provided. These three points are discussed throughout a systematic study of length-of-day data. Moreover, a method evaluating the performances of the algorithm is described. It makes use of five indicators: the index of energy conservation, the index of orthogonality, the number of intrinsic mode functions (IMFs), the number of iterations per IMFs and the index of component separation. Finally, the efficiency of the intermittency test is demonstrated through the study of vortex-shedding signals, and a nonlinear phenomenon of intra-wave frequency modulation is found and interpreted.
Appears in Collections:Master's Theses (Open)

Show full item record
Files in This Item:
File Description SizeFormatAccess SettingsVersion 
Thesis-J_Landel.pdf15.4 MBAdobe PDF



Google ScholarTM


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.