Seismic Random Noise Suppression Based on the Discrete Cosine Transform
详细信息
- 责任者：Lu Wenkai (State Key Laboratory of Intelligent Technology and Systems ; Department of Automation ; Tsinghua University ; Beijing 100084 ; China)
- 刊名：Oil Geophysical Prospecting
- 出版年：2011
- 卷期：46(2)
- 关键词：地震滤波 ; seismic filtering
- 页码：p.202-206
- 图表：6 illus., 1 table, 10 refs.
- 分类号：1600
- issnNo：ISSN1000-7210
- isbnNo：CN13-1095/TE
摘要
This paper proposes a seismic random noise suppression method using the predictive filter in the discrete cosine transform(DCT) domain, and then evaluates its performance. In comparison with the discrete Fourier transform (DFT), DCT can represent seismic signals with fewer coefficients, i.e., DCT has superior energy compaction for seismic signal. That is why DCT can separate seismic signals from random noise better. The results from both synthetic and real data show that the proposed method achieves better performance for random noise suppression and signal preservation compared with the f-x prediction filter.