gazebo自建小车备忘

http://www.generationrobots.com/blog/en/2015/02/robotic-simulation-scenarios-with-gazebo-and-ros/

1.http://www.pslyw.net/8809696.html

1. TRAJECTORY_BUILDER_2D.use_imu_data = false  
2.   
3. TRAJECTORY_BUILDER_2D.use_online_correlative_scan_matching = true