摘要
将动、静校正后的 CMP道集内的各道与模型道相比较 ,同时找出各道与模型道间的时差和常相位差 ,并进行相应的时差、相位校正 (双参数校正 ) ,然后对双参数校正后的各道在指定的 (一般为高信噪比 )频带估算加权系数 ,最后进行加权叠加 ,以提高叠加剖面的信噪比。
Each trace in a CMP trace gather that has undergone both static and dynamic corrections is compared with the model trace so as to determine its moveout and constant phase difference to the model trace, which are then used to make the corresponding moveout and phase corrections( dual parameter correction). Then, in given frequence band ( usual high S/N ratio band), the weighting coefficient is estimated for each trace which has undergone dual parameter correction. Finally, the weighted stacking is made to improve the S/N ratio of stacked seismic section.
出处
《石油地球物理勘探》
EI
CSCD
北大核心
2000年第4期415-418,共4页
Oil Geophysical Prospecting
关键词
时差
相位差
信噪比
加权系数
moveout
phase difference
S/N ratio
weighting coefficient