UAV terrain following flight using RTK-GPS

Recently, UAV are researched and used in various fields. Especially, UAV autopilot to reduce labor costs and fill the gap in skills is an essential technology for industrial applications. Autopilot, especially terrain following requires not only longitude and latitude but also altitude information on the map. GCS software, such as Mission Planner and MAVProxy support terrain following. There are various methods for obtaining altitude information, such as using sensors such as GPS and Lidar, and one of them is DEM that expresses the topography of the ground surface using digital data. In this study, using DEM, I performed highly accurate terrain following flight.