@1365953620 这样干！

<link name="laser_link"> <sensor name='gpu_lidar' type='gpu_lidar'> <topic>lidar</topic> <update_rate>10</update_rate> <lidar> <scan> <horizontal> <samples>640</samples> <resolution>1</resolution> <min_angle>-1.396263</min_angle> <max_angle>1.396263</max_angle> </horizontal> <vertical> <samples>16</samples> <resolution>1</resolution> <min_angle>-0.261799</min_angle> <max_angle>0.261799</max_angle> </vertical> </scan> <range> <min>0.08</min> <max>10.0</max> <resolution>0.01</resolution> </range> </lidar> <alwaysOn>1</alwaysOn> <visualize>true</visualize> </sensor> </link>