自然科学版 英文版
自然科学版 英文版
自然科学版 英文版

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中南大学学报(英文版)

Journal of Central South University

Vol. 9    No. 1    March 2002

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Focus projection of the parabolic radon transform
and multiple waves separator, elimination
ZHANG Jian-gui(张建贵),SONG Shou-gen(宋守根),YUAN Xiu-gui(袁修贵)

College ofResources, Environmental and Civil Engineering, Central South University, Changsha410083, China

Abstract:Based on the scalar wave equation, making use of the ray approximation of the reflected seismic data (CMP or CSP gathers), the authors derive respectively the projection function of the primary waves and multiple waves at the near-offset (CMP or CSP gathers) in the parabolic Radon transform(PRT)domain. From the geometric point, the authors prove that the energy of the reflection still distributes along hyperbola which has higher curvature in the PRT domain and becomes some energymasses. Sothe primary waves and the multiple waves which interweave each other in (x, t) domain can be completely separated, which helps the multiple waves eliminated by filtering ormuting. It is important for the analysis of velocity and the separator and elimination of multiple waves.

 

Key words: parabolic Radon transform; multiple waves; projection; focus

中南大学学报(自然科学版)
  ISSN 1672-7207
CN 43-1426/N
ZDXZAC
中南大学学报(英文版)
  ISSN 2095-2899
CN 43-1516/TB
JCSTFT
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