Enhancement technology of high frequency signal in seismic data based on PRT-TFPF

During the high-frequency effective signal processing of seismic exploration records,the traditional Time-Frequency Peak Filtering(TFPF) may lead to wave distortion and large energy loss.In this paper,the Parallel Radial Trace Time-Frequency Peak Filtering(PRT-TFPF) arithmetic was adopted to process the seismic data.The proposed arithmetic has better performance to process the high-frequency effective signals with highly nonlinear degree by comparing with the TFPF method.The PRT-TFPF not only can decrease the signal frequency,stretch the wave form,but also can meet the unbiased estimation requirement in one data window lengthof TFPF,can reduce the energy loses of filtering process,which can take advantage of recovery of the signals.The results of the experiments on 60 Hz effective signal event show that the PRT-TFPF can remain the signal waveform without distortion,keep the amplitude,and recover the event continuously and clearly.By comparing the traditional TFPF,the Signal to Noise Ratio(SNR) of the proposed PRT-TFPF is improved by about 6.5 dB.