Antialiasing condition and filter for the reciprocity equation of correlation type
Antialiasing condition and filter for the reciprocity equation of correlation type
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DOI：
10.1190/1.3495542
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发表时间：
2010-12
期刊：
影响因子：
3.3
通讯作者：
W. Cao;G. Schuster
中科院分区：
文献类型：
--
作者：
W. Cao;G. Schuster
已经导出了用于地震数据干涉重定的抗锯齿公式。更一般地，该公式对于相关型互易方程的数值实现是有效的，该方程用于重定值、外推、内插和偏移。令人惊讶的是，与标准抗锯齿条件相比，抗锯齿条件更能容忍较粗略的迹线采样。合成垂直地震剖面（VSP）数据的数值结果表明，当抗锯齿条件用作干涉重定值的约束时，干涉测量伪影得到有效减少。
An antialiasing formula has been derived for interferometric redatuming of seismic data. More generally, this formula is valid for numerical implementation of the reciprocity equation of correlation type, which is used for redatuming, extrapolation, interpolation, and migration. The antialiasing condition can be, surprisingly, more tolerant of a coarser trace sampling compared to the standard antialiasing condition. Numerical results with synthetic vertical seismic profile (VSP) data show that interferometry artifacts are effectively reduced when the antialiasing condition is used as a constraint with interferometric redatuming.