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Noise Attenuation for 2-D Seismic Data by Radial-Trace Time-Frequency Peak Filtering

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3 Author(s)
Ning Wu ; Dept. of Commun. Eng., Jilin Univ., Changchun, China ; Yue Li ; Baojun Yang

The time-frequency peak filtering (TFPF) is an effective tool in random-noise attenuation and has been applied to seismic record denoising in recent years. The window length (WL) of the time-frequency distribution (TFD) is the key to the conventional TFPF technology. A fixed WL is not optimal for both the low- and high-frequency components at the same time; an adaptive WL results in serious distortion of the reflected waveform. In this letter, we discuss a modified TFPF along the radial-trace direction and prove its advantage in TFD window selection. Experiments on both synthetic models and field data show that the radial-trace TFPF result is no longer much influenced by the WL as the conventional TFPF. Furthermore, it can provide better performance in both random-noise attenuation and reflected signal preservation with a fixed WL.

Published in:

Geoscience and Remote Sensing Letters, IEEE  (Volume:8 ,  Issue: 5 )