Launch-In-SITL.md

@@ -49,6 +49,12 @@ nano apm.launch
 <arg name="fcu_url" default="udp://127.0.0.1:14551@14555" />
 ```
 
+## Source setup.bash
+source you setup.bash
+```shell
+source <WORKSPACE_PATH>/devel/setup.bash
+```
+
 ## Launch Supporting ROS Nodes
 ```shell
 cd <droneoa_ros>/launch
@@ -63,18 +69,12 @@ sudo sh initenv.sh
 You may need to disconnect and reconnect the camera.
 
 ## Launch droneoa ROS Node
+Launch droneoa_ros node, which accept command input.
 ```shell
 cd <droneoa_ros>/launch
 roslaunch step2.launch
 ```
 
-## Launch ROS node
-source you setup.bash
-```shell
-source <WORKSPACE_PATH>/devel/setup.bash
-rosrun droneoa_ros droneoa_ros
-```
-
 ## [Alternative] Launch Node Manually:
 Using provided step1 step2 launch file is recommended.