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OALib Journal期刊
ISSN: 2333-9721
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基于射线理论面向层状介质的三维观测系统聚焦束分辨率计算
Keywords: 聚焦束,三维地震观测系统,射线理论,分辨率,双聚焦
Abstract:
？本文用射线理论简化了观测系统双聚焦束分辨率的计算,即首先根据射线理论求得由目标点激发的地表响应——cfp道集,再将cfp道集向下延拓聚焦到目标层,得到聚焦束。观测系统中检波点和震源分布密集时成像效果更好。当存在较大倾角构造时,成像点周围的能量团会向构造倾向偏离,且在观测系统(检波点和震源点分布)稀疏时更明显。理论和实际模型试算结果均表明,该方法计算速度较快、效率较高,且符合精度要求。
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