Chun-Yao Lee and Yao-chen Lee
BPNN Based Processing for End Effects of HHT
1719 - 1721
2010
4
12
International Journal of Electrical and Computer Engineering
https://publications.waset.org/pdf/11909
https://publications.waset.org/vol/48
World Academy of Science, Engineering and Technology
This paper describes a method of signal process applied
on an end effects of HilbertHuang transform (HHT) to provide an
improvement in the reality of spectrum. The method is based on
backpropagation network (BPN). To improve the effect, the end
extension of the original signal is obtained by backpropagation
network. A full waveform including origin and its extension is
decomposed by using empirical mode decomposition (EMD) to obtain
intrinsic mode functions (IMFs) of the waveform. Then, the Hilbert
transform (HT) is applied to the IMFs to obtain the Hilbert spectrum of
the waveform. As a result, the method is superiority of the processing
of end effect of HHT to obtain the real frequency spectrum of signals.
Open Science Index 48, 2010