How to navigate without localization
We're using turtlebot_gazebo now and every time we navigate, it uses amcl. However, in our task,robot just needs to avoid the obstacles and follow the target person in a small range of view. In short, we want to modify or some way to navigate without localization. I suspect it is sth related to the tf and move_base but not quite clear what to do. Can it be easily fulfilled? What should we do? Many Thanks!