基于两步弥散算子的共反射面元射线束成像方法研究

The CRS-BEAM-PSDM based on two-step-smearing operator

基于克希霍夫统一成像理论,对共反射面元射线束成像方法进行了深入分析.通过这种分析可以得到一种新的共反射面元射线束类成像实现方式:基于两步弥散算子的共反射面元射线束类成像方法.当仅实施第一步弥散时,即可获得信噪比大幅提高同时更为规则的叠前道集.二维、三维的理论和实际数据算例证实了上述观点.

Based on the unified Kirchhoff imaging theory,we provide a deep analysis about the Common-Reflection-Surface(CRS)Beam Prestack Depth Migration(PSDM).With such an analysis,a novel two-step-smearing operator based CRS-beam PSDM method is presented.For this algorithm,when only the first smearing is implemented,a signal/noise ratio enhanced and a more regularized prestack dataset can be obtained.The abolv points are demonstrated by some 2D and 3D synthetic and real datasets.