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    自然科學版 英文版
    自然科學版 英文版

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    中南大學學報(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(張建貴),SONG Shou-gen(宋守根),YUAN Xiu-gui(袁修貴)

    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

    中南大學學報(自然科學版)
      ISSN 1672-7207
    CN 43-1426/N
    ZDXZAC
    中南大學學報(英文版)
      ISSN 2095-2899
    CN 43-1516/TB
    JCSTFT
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