turtlebot position fluctuates
Dear All, Please have look on this video: http://youtu.be/MiTcy0rHY78
I'm running turtlebot gazebo simulator, but as you see the pose of robot has lots of error and fluctuates I have run the following:
1)roslaunch turtlebot_gazebo turtlebot_world.launch
2)roslaunch turtlebot_gazebo gmapping_demo.launch
3)roslaunch turtlebot_rviz_launchers view_navigation.launch
4)roslaunch turtlebot_gazebo amcl_demo.launch
The position of the robot in gazebo is fixed, but the localized position in rviz is fluctuating between several points. what should I change to make the position of the robot stable? Many thanks and regards.