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| THE IMPROVEMENT OF COSINE APPROCH METHOD AND ITS APPLICATION TO REMOVE INDUSTRIAL NOISE IN SEISMIC DATA |
| HU Wei1,2, LU Xiao-wei3 |
1. Geoscience Institute, Yangtze University, Jingzhou 434023, China;
2. Geophysical Exploration Corporation, Shengli Oilfield Ltd., Dongying 257100, China;
3. Geophysical Research Institute, Shengli Oilfield Ltd., Dongying 257022, China |
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Abstract Cosine Approach Method is a new technique for removing 50Hz industrial noise. However, because of the complexity of the real data, the method cannot effectively suppress the industrial noise contained in some real data. Based on a careful analysis of the real data, this paper proposes to adopt refined frequency scanning, super sampling of cosine signal and amplitude statistics of seismic data to improve the precision and practicality. The theoretical analysis and processing result of the real data show that the improved method is more practical and precise.
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Received: 05 March 2005
Published: 24 December 2005
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