说明：  利用地震初至波确定近地表介质结构，在矿产资源的勘探开发及工程建设中有重要作 用。地震射线追踪方法是研究地震波传播的有效工具，目前常用的方法主要有有限差分解方 程法和最小路径法。最短路径方法起源于网络理论，首次由 Nakanishi 和 Yamaguchi 应用于 地震射线追踪中。 Moser 以及 Klimes 和 Kvasnicha 对最短路径方法进行了详细研究。通过科 技人员的不断研究，最短路径方法目前已发展较为成熟，其基本算法的计算程序也较为固定。 被称作是第四代计算机语言的 MATLAB 语言，利用其丰富的函数资源把编程人员从繁 琐的程序代码中解放出来。 MATLAB 语言用更直观的、符合人们思维习惯的代码，为用户提 供了直观、简洁的程序开发环境。本文介绍运用 Matlab 实现最短路径法的方法和步骤，便于 科研院校教学中讲授、演示和理解最短路径方法及其应用。
(First to use seismic waves to determine the near-surface medium structure, play an important role in the exploration and development of mineral resources in construction. Seismic ray tracing method is an effective tool to study seismic wave propagation, currently used methods are finite difference equation method and the minimum path method. The shortest path method originated in network theory, for the first time by the Nakanishi and Yamaguchi applied to the seismic ray trail. Moser and Klimes and Kvasnicha shortest path method were studied in detail. Through continuous research scientific and technical personnel, the shortest path method has been developed more mature, the basic arithmetic calculation procedure is relatively fixed. It is called fourth-generation computer language MATLAB language, the use of its rich resources function frees the programmer the tedious code. MATLAB language with a more intuitive, consistent with the code of the habit of thinking people, to provide use)