中文说明：
本文探讨了在MATLAB环境中实现最短路径射线追踪的方法和步骤，并通过数值模拟演示了所编程序在射线追踪正演计算中的应用。
English Description：
This paper discusses the method and steps of realizing the shortest path ray tracing in Matlab environment, and demonstrates the application of the program in ray tracing forward calculation through numerical simulation.