More practical raytracing methods currently include the wavefront method, the shortest path method, the travel time epenthesis method, the eikonal equation finite difference method, etc.
当前实用性较强的射线追踪方法，包括波前法，最短路径法，走时插值法，程函方程有限差分法等。
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This algorithm USES raytracing to calculate traveltime, and DE - rives reflection amplitude from wave field interface equation.