Abstract A phenomenon of “frequency hopping” occurs when processing non-stationary seismic signals by wavelet packet. The existing method of decomposing seismic signals in high level based on wavelet packet cannot rapidly obtain the arrangement rule of frequency band numbers and node numbers. To rectify this disadvantage, a fast algorithm for converting frequency band to node numbers is proposed, based on wavelet packet transform and XOR algorithm. For analysis, we use the MATLAB platform, take Tangshan (north-south) seismic wave as an example and set the corresponding procedures. Our results get the same arrangement rule as the existing method from frequency band numbers to node numbers, verifying the correctness of the proposed conversion algorithm.
HAN Jingjing,BAI Quan,MENG Donglin et al. Fast Conversion Algorithm from Frequency Band to Node Numbers of Seismic Signal Based on Wavelet Packet[J]. jgg, 2017, 37(5): 521-526.
HAN Jingjing,BAI Quan,MENG Donglin et al. Fast Conversion Algorithm from Frequency Band to Node Numbers of Seismic Signal Based on Wavelet Packet[J]. jgg, 2017, 37(5): 521-526.