该文件是用matlab编程语言，针对电磁波传播特性，用编程方式实现电磁波在二维空间中的传播，并进行了传播过程的演示。(This document is a programming language in MATLAB. In view of the characteristics of electromagnetic wave propagation, the transmission of electromagnetic wave in two-dimensional space is realized by programming, and a demonstration of the propagation process is carried out.)