吉林大学学报(地球科学版) ›› 2021, Vol. 51 ›› Issue (2): 597-606.doi: 10.13278/j.cnki.jjuese.20200111
• 地球探测与信息技术 • 上一篇
王睿1, 王德利1, 胡斌1, 王铁兴1, 王通2, 崔亚龙3
Wang Rui1, Wang Deli1, Hu Bin1, Wang Tiexing1, Wang Tong2, Cui Yalong3
摘要: 自由表面多次波压制(SRME)方法是海洋地震数据处理中的关键步骤。当存在崎岖海底条件时,绕射波十分发育,常规SRME算法很难将复杂绕射多次波有效消除。对压制效果较差的多次波进行成因分析,首先基于f-x EMD波场分离算法,将全数据分解为反射部分和绕射部分,再对其进行多次波预测,获得绕射预测多次波子集:反射-绕射预测多次波、绕射-反射预测多次波和绕射-绕射预测多次波。然后,改进常规SRME算法的迭代过程,在SRME的迭代过程中使用与原数据中多次波更加匹配的绕射多次波子集进行多次波压制。与常规SRME算法的对比结果表明,改进的SRME算法在理论数据和实际数据处理中对多次波的压制都取得更好的效果。
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