uav_ugv_simulation 1.0.0 UAV-UGV Gazebo SITL Simulation with GPS-Denied Navigation Developer MIT ament_python rclpy std_msgs geometry_msgs sensor_msgs nav_msgs visualization_msgs tf2 tf2_ros tf2_geometry_msgs cv_bridge image_transport mavros mavros_msgs gazebo_ros gazebo_plugins launch launch_ros ament_lint_auto ament_lint_common python3-pytest ament_python