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大多数地震处理技术都要求地震数据具备完整性和规则性,然而,由于诸多因素的影响,地震勘探所采集到的资料普遍存在数据缺失,需要对地震数据进行重建.本文在传统Radon变换重建的基础上提出一种λ-f域加权抛物Radon变换的地震数据重建方法.通过引入新变量λ,消除了Radon变换算子对频率的依赖,使得Radon变换算子及算子的逆只需计算一次,显著提高了计算效率.同时,在λ-f域抛物Radon变换迭代计算过程中引入变化的权系数,更好地实现了λ-f域的能量聚焦.理论模型及实际数据试算表明,文中方法对地震数据重建精度较高,单道对比吻合较好.
Most seismic processing techniques require the integrity and regularity of seismic data, however, due to many factors, the data collected by seismic exploration are generally missing and need to be reconstructed in seismic data.In this paper, Based on the proposed λ-f domain weighted parabolic Radon transform seismic data reconstruction method by introducing a new variable λ, eliminating the Radon transform operator on the frequency dependence, making the Radon transform operator and operator inverse calculation only once , The computational efficiency is significantly improved.At the same time, the variable weighting coefficient is introduced into the λ-f domain parabolic Radon transform iterative process to better achieve the energy focusing in the λ-f domain.The theoretical model and the actual data show that in the paper The method has higher accuracy of seismic data reconstruction and better agreement of single channel.