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Title	Robust Digital-Twin Airspace Discretization And Trajectory Optimization For Autonomous Unmanned Aerial Vehicles
ID_Doc	46849
Authors	ElSayed M.; Mohamed M.
Year	2024
Published	Scientific Reports, 14, 1
DOI	http://dx.doi.org/10.1038/s41598-024-62421-4
Abstract	The infiltration of heterogenous fleets of autonomous Unmanned Aerial Vehicles (UAVs) in smart cities is leading to the consumerization of city air space which includes infrastructure creation of roads, traffic design, capacity estimation, and trajectory optimization. This study proposes a novel autonomous Advanced Aerial Mobility (AAM) logistical system for high density city centers. First, we propose a real-time 3D geospatial mining framework for LiDAR data to create a dynamically updated digital twin model. This enables the identification of viable airspace volumes in densely populated 3D environments based on the airspace policy/regulations. Second, we propose a robust city airspace dynamic 4D discretization method (Skyroutes) for autonomous UAVs to incorporate the underlying real-time constraints coupled with externalities, legal, and optimal UAV operation based on kinematics. An hourly trip generation model was applied to create 1138 trips in two scenarios comparing the cartesian discretization to our proposed algorithm. The results show that the AAM enables a precise airspace capacity/cost estimation, due to its detailed 3D generation capabilities. The AAM increased the airspace capacity by up to 10%, the generated UAV trajectories are 50% more energy efficient, and significantly safer. © The Author(s) 2024.
Author Keywords	Aerial mobility operation model; Autonomous UAV logistics; Digital twin models; Drones; Energy-efficient trajectory optimization; Resilient transportation infrastructure

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