Beamforming with the generalized sidelobe canceller for coherent noise attenuation in 3D seismic data
Beamforming with the generalized sidelobe canceller for coherent noise attenuation in 3D seismic data
复制标题
使用广义旁瓣消除器进行波束形成，以实现 3D 地震数据中的相干噪声衰减
DOI：
10.1007/s11770-004-0021-1
复制
发表时间：
2004
影响因子：
0.7
通讯作者：
Hu Tianyue
中科院分区：
文献类型：
--
作者：
Hong Fei;Hu Tianyue
本文提出了一种衰减 3D 地震数据中相干噪声的新方法。这里利用具有广义旁瓣消除器（GSC）设计方法的自适应波束形成作为线性约束自适应波束形成结构的一般形式。它由固定波束形成器和无约束自适应波束形成器前面的信号阻塞矩阵组成。考虑到3D地震勘探几何的复杂性，采用GSC技术的3D波束形成有两个关键点：（1）沿方位角截面排序，以简化从3D到2D的走时和偏移量之间的关系，以及（2）动态分箱方案，以避免某些方位角截面可能出现的不良折叠。仿真结果和实际数据示例都表明，新开发的GSC 3D波束成形以相对较低的成本、足够的稳定性和良好的分辨率产生了更可信的结果。
This paper presents a new approach for attenuating coherent noise in 3D seismic data. An adaptive beamforming with generalized sidelobe canceller (GSC) design methodology is utilized here as a general form of linearly constrained adaptive beamforming structure. It consists of a fixed beamformer, and a signal-blocking matrix in front of an unconstrained adaptive beamformer. Considerationf of the complexity of the geometry for 3D seismic survey, the 3D beamforming with GSC technique is developed with two key points: (1) sorting along azimuth sections to simplify the relationship between traveltime and offset from 3D to 2D, and (2) dynamic binning scheme to avoid the possible poor folding in some azimuth sections. Both simulation result and real data example show that the newly developed 3D beamforming with GSC yields more credible results at a relative low cost, sufficient stability and good resolution.