PolarizationMigration of Three-component Reflected Waves under Small Migration ApertureCondition
PolarizationMigration of Three-component Reflected Waves under Small Migration ApertureCondition
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小偏移孔径条件下三分量反射波的偏振偏移
DOI：
10.13168/agg.2015.0049
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发表时间：
2016
影响因子：
0.9
通讯作者：
Gao Yingjie
中科院分区：
文献类型：
--
作者：
Wang Bo;Liu Shengdong;Zhou Fubao;Lu Tuo;Huang Lanying;Gao Yingjie
缺点对隧道和道路建设的安全构成了巨大的威胁。在本文中，我们将解决方案（称为“ 3C”）介绍了解决方案，可以将解决方案大致分为三个步骤。在迁移计算中，我们提出了一种极化迁移成像技术，以消除伪像，以便我们可以准确地预测出现参数。
Faults pose a great threat to the safety of tunnel and roadway construction. Expanding the scientific community’s understanding of advanced fault detection through research is therefore of critical importance. However, narrow roadway space often restricts sources and receivers positioning, resulting in small migration aperture problems during advanced migration imaging. The resulting artifacts make it impossible to analyze occurrence parameters of faults, such as dip and trend. In this paper, we introduce a solution to this problem with three-component (hereafter called “3C”) reflected signals. The solution can be roughly divided into three steps. First, we use a covariance matrix to calculate the principal polarization direction, which indicates the principal energy propagating direction of reflected waves. A factor is introduced to represent the principal polarization direction. Second, we establish a weighted function of the factor and apply the function in migration computation. Finally, we put forward a polarization migration imaging technique to eliminate the artifact so that we can accurately predict occurrence parameters. It has been proven that polarization migration is an efficient way to achieve advanced imaging of faults under small migration aperture condition through numerical simulations, water sink model experiments, and roadway field experiments...