- <xacro:range_sensor name="sonar_forward" ros_topic="range_forward" update_rate="10" minRange="0.04" maxRange="6" fov="${60*PI/180}" radiation="ultrasound" />
- <xacro:range_sensor name="sonar_backward" ros_topic="range_backward" update_rate="10" minRange="0.04" maxRange="6" fov="${60*PI/180}" radiation="ultrasound" />
+ <xacro:range_sensor name="sonar_forward" ros_topic="range_forward" update_rate="10" minRange="0.04" maxRange="6" fov="${30*PI/180}" radiation="ultrasound" />
+ <xacro:range_sensor name="sonar_backward" ros_topic="range_backward" update_rate="10" minRange="0.04" maxRange="6" fov="${30*PI/180}" radiation="ultrasound" />