Study on Ways to Restrain End Effect of Hilbert-Huang Transform
摘要
Abstract. The Hilbert Huang Transform (HHT) is an advanced algorithm, but its end effect problem lim-its its applications severely. A new method to deal with the end effect is proposed in this paper. A new com-putation parameter is applied to estimating the similarity between two waveforms. Both the shape factor and amplitude factor are considered in the new parameter, and the more suitable end extending waveform can be acquired. The window function is designed and added to the extended data wave, and that can reduce the in-fluence of end effect further. In the simulation experiments, time-frequency spectrums and marginal spec-trums are given, and by contrasting the spectrums we can draw the conclusion that this new method to deal with the end effect is feasible and it can achieve better results than the traditional algorithms.