1、启动脚本分析turtlebot3_navigation2 导航启动命令如下：- 仿真环境，需要设置：use_sim_time:=True- 指定地图ros2 launch turtlebot3_navigation2 navigation2.launch.py\use_sim_time:=True\map:=$HOME/laoer.yamlnavigation2.launch.py 分析1）配置仿真时间开关use_sim_time = LaunchConfiguration('use_sim_time', default='false')2）加载地图map_dir = LaunchConfiguration( 'map', default=os