Open AccessAnalysis of jet engine modulation effect with extended Hilbert‐Huang transform
Author(s) -
Park J.H.,
Lim H.,
Myung N.H.
Publication year - 2013
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
eISSN - 1350-911X
pISSN - 0013-5194
DOI - 10.1049/el.2012.3579
Subject(s) - waveform , modulation (music) , frequency modulation , jet engine , jet (fluid) , acoustics , hilbert–huang transform , time–frequency analysis , radar , noise (video) , electronic engineering , hilbert transform , jet noise , doppler effect , computer science , physics , engineering , telecommunications , white noise , aerospace engineering , artificial intelligence , bandwidth (computing) , spectral density , mechanics , astronomy , image (mathematics)
The jet engine modulation (JEM) effect is widely used for radar target identification. The Hilbert‐Huang transform (HHT), a high‐resolution time‐frequency technique, is extended in order to make an effective JEM analysis. The simulation and measurement results show that the extended HHT not only extracts jet engine features but also definitely exhibits sinusoidal waveforms of rotation‐induced micro‐Doppler signatures. It also has better applicability for signatures corrupted by noise than other conventional time‐frequency techniques.