| 时距平面剩余时差选择加权叠加压制多次波方法及效果 |
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| 引用本文： | 朱根法.时距平面剩余时差选择加权叠加压制多次波方法及效果[J].地球物理学报,1987,30(2):197-200. |
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| 作者姓名： | 朱根法 |
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| 摘 要： | 一个CDP道集经动校正后,多次波仍存在剩余时差δt,它随炮检距呈抛物线变化。由δt的变化即可求出多次波剩余波数△K的分布规律。据此,可设计一个理想的叠加剩余波数响应,用于动校正后的CDP道集的加权叠加。在t～x平面选择δt,即可改变叠加剩余波数响应,从而改变各道的加权系数,实现最佳压制多次波的效果。
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| 关 键 词： | 时距平面 剩余时差 加权叠加 多次波 压制 |
| 收稿时间： | 1986-03-06 |
THE SUPPRESSION OF MULTIPLES BY WEIGHTED STACKING THROUGH SELECTING RESIDUAL MOVEOUTS IN T～X PLANE |
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| ZHU GEN-FA.THE SUPPRESSION OF MULTIPLES BY WEIGHTED STACKING THROUGH SELECTING RESIDUAL MOVEOUTS IN T～X PLANE[J].Chinese Journal of Geophysics,1987,30(2):197-200. |
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| Authors: | ZHU GEN-FA |
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| Abstract: | After normal moveout （NMO） correction of a CDP set, multiples have residual moveous dt, which varies parabolically with the shot-receiver distance. The distribution of residual wave number △K of multiple can be derived from the changes of dt. Therefore, a desirable complex stacking residual response of wave number is designed, the weight of each stacked trace is derived with Fejer polynomial approximation and the NMO corrected CDP set is stacked with proper weights. The complex stacking residual response of wave number can be changed with the change of dt on the tx plane and thereby the weight of each trace can also be changed to yield optimum results in suppressing multiples. |
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| Keywords: | t～x plane Residual moveout Weighted stacking Multiples Suppression |
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