Seismic random noise suppression based on the discrete cosine transform
LU Wen-kai
Department of Automation,National Key Laboratory of Intelligent Technology and Systems,Tsinghua National Laboratory for Information Science and Technology,Tsinghua University,Beijing 100084,China
Abstract: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.
陆文凯. 基于离散余弦变换的地震随机噪声压制技术[J]. 石油地球物理勘探, 2011, 46(2): 202-206.
LU Wen-kai. Seismic random noise suppression based on the discrete cosine transform. OGP, 2011, 46(2): 202-206.