功能：该程序用于仿真时间同步算法双向不等时间同步方法（TWT-UTD）与无时漂往返校时方法（RTT）。输入：节点间距离、钟漂，输出：两幅同步误差比对图。-Features: The program for the simulation time synchronization method of time synchronization algorithm for two-way ranging (TWT-UTD) and no drift from the time when the method of school (RTT). Input: the distance between nodes, clock drift, output: 2 synchronization errors of the map.