Ray Tracing In 3-D Media By Parameterized Shooting
Yonghe Sun · Geophysical Journal International · 1993
A new ray‐bending method is presented for tracing rays in a 3‐D isotropic medium. Ray paths are iteratively updated by integrating the ray equation along the approximate ray path. the improved path is expressed in terms of the path integrals along the approximate path. the new updating procedure achieves similar or superior performance with often significantly less operation counts than other bending methods. the method further speeds up convergence by tracing the low‐frequency smooth components of the ray path with coarse grids and the high frequency components with fine grids.