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Seismic signal analysis based on the dual-tree complex wavelet packet transform
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作者 XIE Zhou-min(谢周敏) WANG En-fu(王恩福) +2 位作者 ZHANG Guo-hong(张国宏) ZHAO Guo-cun(赵国存) CHEN Xu-geng(陈旭庚) 《Acta Seismologica Sinica(English Edition)》 CSCD 2004年第z1期117-122,共6页
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 contin... 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 ″focal- izing″ function if it matches the phase spectrum of signals analyzed. We here described the dual-tree CWPT algo- rithm, 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. 展开更多
关键词 dual-tree complex wavelet packet transform instantaneous characteristics seismicsignalanalysis
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