Seismic signal analysis based on the dual-tree complex wavelet packet transform |
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| Authors: | Xie Zhou-min Wang En-fu Zhang Guo-hong Zhao Guo-cun and Chen Xu-geng |
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| Institution: | (1) Institute of Crustal Dynamics, China Earthquake Administration, 100085 Beijing, China |
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| Abstract: | We tried to apply the dual-tree complex wavelet packet transform in seismic signal analysis. The complex wavelet packet transform
(CWPT) combine the merits of real wavelet packet transform with that of complex continuous wavelet transform (CCWT). It can
not only pick up the phase information of signal, but also produce better “focalizing” function if it matches the phase spectrum
of signals analyzed. We here described the dual-tree CWPT algorithm, and gave the examples of simulation and actual seismic
signals analysis. As shown by our results, the dual-tree CWPT is a very effective method in analyzing seismic signals with
non-linear phase.
Foundation item: Cultural Heritage Protection Program of State Administration of Cultural Heritage (200001). |
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| Keywords: | dual-tree complex wavelet packet transform instantaneous characteristics seismic signal analysis |
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