在影响地震波振幅的诸多因素中，除反射系数外，最主要的是波前扩散和吸收的影响。

Among various factors affecting the amplitude of seismic record, wavefront divergence and absorption are the key ones, except reflected coefficients.

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基于三维射线跟踪的微变网络方法和波前重建思路 ，提出一种适用于三维复杂介质地震波走时的快速算法。

This paper presents a three-dimensional propagation model for path-loss prediction in an urban microcell, based on ray-tracing techniques.

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