Reconstruction of 3-D seismic signals irregularly sampled along two spatial coordinates
Reconstruction of 3-D seismic signals irregularly sampled along two spatial coordinates
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DOI：
10.1190/1.1444716
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发表时间：
2000
期刊：
影响因子：
3.3
通讯作者：
K. Hindriks;A. Duijndam
中科院分区：
文献类型：
--
作者：
K. Hindriks;A. Duijndam
地震信号通常沿沿着空间坐标不规则地采样，导致次优处理和成像结果。傅立叶分量的最小二乘估计用于重构沿沿着两个空间坐标不规则采样的带限地震信号。基于空间样本周围的区域的简单且有效的对角加权方案在近似意义上考虑噪声（带宽之外的信号）的性质。基于信号和噪声能量的对角稳定确保了鲁棒估计。通过时间频率分量的重建允许根据最小视速度在两个维度上指定变化的带宽。这种参数化提高了较低时间频率的重建能力。空间孔径的形状影响傅立叶域的采样方法。考虑到这一特性，可以恢复更大的带宽。该物业…
Seismic signals are often irregularly sampled along spatial coordinates, leading to suboptimal processing and imaging results. Least‐squares estimation of Fourier components is used for the reconstruction of band‐limited seismic signals that are irregularly sampled along two spatial coordinates. A simple and efficient diagonal weighting scheme, based on the areas surrounding the spatial samples, takes the properties of the noise (signal outside the bandwidth) into account in an approximate sense. Diagonal stabilization based on the energies of the signal and the noise ensures robust estimation. Reconstruction by temporal frequency component allows the specification of varying bandwidth in two dimensions, depending on the minimum apparent velocity. This parameterization improves the reconstruction capability for lower temporal frequencies. The shape of the spatial aperture affects the method of sampling the Fourier domain. Taking into account this property, a larger bandwidth can be recovered. The properti...