Joyuan

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> After “roslaunch champ_config gazebo.launch”and “roslaunch champ_config navigate.launch rviz:=true ”, my robot is navigating autonomously, but the odom coordinates in rviz are always changing, and the map coordinates are unchanged....

> do you have a video? ![video is here](https://user-images.githubusercontent.com/72717363/145540070-e85ca524-cf4e-4572-85a9-3681bf3dcf25.gif) Dear doctor, you can see video here. Problem1: lidar data is erratic; Problem2: robot's position meet a sudden change from one...