摘要
基于部分动校正(NMO)后反射同相轴在CMP道集上的抛物线走时近似,给出了加权抛物Radon变换叠前地震数据重建方法(WPRT).WPRT通过在迭代过程中引入变化着的权系数,拓展和改进了传统抛物Radon变换方法,使其可同时完成不规则采样的规则化和空道及近偏移距道重建,且有更高的计算效率.文中给出了应用WPRT进行近偏移距和中偏移距的空地震道重建及数据规则化的算法实现.理论模型和实际地震资料的地震数据重建结果显示了本文算法的优点.
Weighted Parabolic Radon Transform （WPRT） method for proposed based on the parabolic assumption of seismic events in CMP prestack seismic data reconstruction is gather after the partial NMO. Owing to introducing varying weight coefficients in WPRT, the proposed WPRT can simultaneously regularize and reconstruct the irregular seismic data with a lot of missing traces, which means a very important improvement to the conventional parabolic Radon transform. The implementation of the proposed algorithm is presented for the complex irregular seismic data and the data with missing traces of near and medium offsets. The results of the theoretical model and the field data demonstrate the effectiveness of the method.
出处
《地球物理学报》
SCIE
EI
CAS
CSCD
北大核心
2007年第3期851-859,共9页
Chinese Journal of Geophysics
基金
国家杰出青年科学基金(40225010)
中国科学院重点研究项目(KZCX3-SW-147)
中国科学院知识创新工程项目(KZCX1-SW-18)资助
