海底电缆鬼波压制及陷频补偿方法研究

doi:10.11978/2017063

Journal of Tropical Oceanography ›› 2018, Vol. 37 ›› Issue (2): 100-104.doi: 10.11978/2017063CSTR: 32234.14.2017063

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Research on ghost suppression and notch compensation of dual-sensor ocean bottom cable data

Jiguang LI(), Dongkai WANG()

Shengli Geophysical Research Institute of China Petroleum & Chemical Corporation, Dongying 257000, China

Received:2017-05-26 Revised:2017-07-04 Online:2018-04-10 Published:2018-04-11
Supported by:
Foundation item: National Science and Technology Major Project (2011ZX05006-002)

Abstract

Abstract:

Because of the influence of strong reflection interfaces such as free surface, seabed, etc., the ghost produces obvious notches in ocean bottom cable (OBC) spectra. It degrades the quality of sections, and increases the difficulty of processing and interpretation. According to different responses of hydrophone and geophone to down-going wave field, we present a new dual-sensor summation method based on pseudo-multichannel matching filter. Compared with traditional methods, the proposed method is totally data driven, so it does not depend on the reflection coefficient. In practical applications, the method can effectively suppress ghosts, remove notches and expand spectral bandwidth. The good results reveal the effectiveness of this method.

Key words: ocean bottom cable, notch, ghost, dual-sensor summation, pseudo-multichannel

Jiguang LI, Dongkai WANG. Research on ghost suppression and notch compensation of dual-sensor ocean bottom cable data[J].Journal of Tropical Oceanography, 2018, 37(2): 100-104.

Figures/Tables 7

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References 10

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Research on ghost suppression and notch compensation of dual-sensor ocean bottom cable data

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