【摘要】 本文提出了基于Ｆｅｒｍ ａｔ原理的折射波正演算法，它以模型的离散划分和射线路径搜索为基础，适用于任意地形和起伏折射界面的速度可横向变化的模型。本算法快速且有效，对作沙漠和山地折射静校的研究有重要的意义。更多还原

【Abstract】 The authors present a refraction forward modelling algorithm in the paper. It is based on the discrete plotting of a model and the ray path searching and uses the Fermat theory as criterion. It fits with a model with any fluctuation of refractor and surface. The refraction velocity can vary in the horizontal direction. The algorithm runs fast and is very effective. It is of great importance to the research into the refraction static effects in the desert and mountain areas.更多还原