Merge Output of Ultrasonic Sensor with Turtlebot3's Lidar Output for Navigation on Local Cost Map

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How to Merge Output of Ultrasonic Sensor with Turtlebot3's Lidar Output for Navigation on Local Cost Map.

Here is local_costmap_params.yaml:

local_costmap: global_frame: odom robot_base_frame: base_footprint

update_frequency: 10.0 publish_frequency: 10.0 transform_tolerance: 0.5

static_map: false
rolling_window: true width: 3 height: 3 resolution: 0.05

And here is costmap_common_params_burger.yaml:

obstacle_range: 3.0 raytrace_range: 3.5

footprint: [[-0.105, -0.105], [-0.105, 0.105], [0.041, 0.105], [0.041, -0.105]]

robot_radius: 0.105
inflation_radius: 1.0 cost_scaling_factor: 3.0

map_type: costmap observation_sources: scan scan: {sensor_frame: base_scan, data_type: LaserScan, topic: scan, marking: true, clearing: true}

Would you Please Assist?