REFLECTION RAYTRACING USING SNELL'S LAW IN MULTI-STAGE FAST MARCHING METHOD

Li，X.1; Zhang，W.2; Lu，Y.2

2021

82nd EAGE Conference and Exhibition 2021

2

937-941

Reflection traveltime tomography needs accurate calculation of reflection traveltime and reflection angle. The multi-stage fast marching method (MFMM) is widely used in reflection raytracing, which performed well in reflection traveltime calculation, but the reflection angle has pretty large error since the reflected ray does not follow the Snell's law strictly nearby the reflector. Here, we developed a modified multi-stage fast marching method that use Snell's law to compute the reflection traveltime of grid points just above the reflector and the corresponding reflection point at the reflector to improve the accuracy of reflection angle. The numerical examples show the reflection angle improved a large scale.

其他

英语

EI

Engineering Laboratory[GML2019ZD0203];

20221511949595

2-s2.0-85127784597

Scopus

1.University of Science and Technology of China,China
2.Southern University of Science and Technology,China

Li，X.,Zhang，W.,Lu，Y.. REFLECTION RAYTRACING USING SNELL'S LAW IN MULTI-STAGE FAST MARCHING METHOD[C],2021:937-941.