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Review of Conflict Resolution Methods for Manned and Unmanned Aviation

Control and Simulation, Faculty of Aerospace Engineering, Delft University of Technology, Kluyverweg 1, 2629 HS Delft, The Netherlands
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This paper is an extended version of our paper published in 9th SESAR Innovation Days, Athens, Greece, 2019.
Aerospace 2020, 7(6), 79; https://doi.org/10.3390/aerospace7060079
Received: 24 April 2020 / Revised: 8 June 2020 / Accepted: 10 June 2020 / Published: 16 June 2020
(This article belongs to the Special Issue Unmanned Aircraft Traffic Management)
Current investigations into urban aerial mobility, as well as the continuing growth of global air transportation, have renewed interest in Conflict Detection and Resolution (CD&R) methods. With the new applications of drones, and the implications of a profoundly different urban airspace, new demands are placed on such algorithms, further spurring new research. This paper presents a review of current CR methods for both manned and unmanned aviation. It presents a taxonomy that categorises algorithms in terms of their approach to avoidance planning, surveillance, control, trajectory propagation, predictability assumption, resolution manoeuvre, multi-actor conflict resolution, considered obstacle types, optimization, and method category. More than a hundred CR methods were considered, showing how most work on a tactical, distributed framework. To enable a reliable comparison between methods, this paper argues that an open and ideally common simulation platform, common test scenarios, and common metrics are required. This paper presents an overview of four CR algorithms, each representing a commonly used CR algorithm category. Both manned and unmanned scenarios were tested, through fast-time simulations on an open-source airspace simulation platform. View Full-Text
Keywords: Conflict Detection and Resolution (CD& R); Air Traffic Control (ATC); U-space; self-separation; Velocity Obstacles (VO); BlueSky ATC Simulator Conflict Detection and Resolution (CD& R); Air Traffic Control (ATC); U-space; self-separation; Velocity Obstacles (VO); BlueSky ATC Simulator
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Ribeiro, M.; Ellerbroek, J.; Hoekstra, J. Review of Conflict Resolution Methods for Manned and Unmanned Aviation. Aerospace 2020, 7, 79.

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