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Multi-Objective UAS Flight Management in Time Constrained Low Altitude Local Environments

Narayan, Pritesh Praneet; Campbell, Duncan A.; Walker, Rodney A.

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Authors

Duncan A. Campbell

Rodney A. Walker



Abstract

This paper presents a new framework for Multi-Objective Flight Management of Unmanned Aerial Systems (UAS), operating in partially known environments, where planning time constraints are present. During UAS operations, civilian UAS may have multiple objectives to meet including: platform safety; minimizing fuel, time, distance; and minimizing deviation from the current path. The planning layers within the framework use multi-objective optimization to converge to a solution which better reflects overall mission requirements. The solution must be generated within the available decision window, else the UAS must enter a safety state; this potentially limits mission efficiency. Local or short range planning at low altitudes requires the classification of terrain and infrastructure in proximity as potential obstacles. The potential increase in the number of obstacles present further reduces the decision window in comparison to high altitude flight. A novel Flight Management System (FMS) has been incorporated within the framework to moderate the time available to the environment abstraction, path and trajectory planning layers for more efficient use of the available decision window. Enabling the FMS during simulation increased the optimality of the output trajectory on systems with sufficient computational power to run the algorithm in real time. Conversely, the FMS found sub-optimal solutions for the system with insufficient computational capability once the objective utility threshold was decreased from 0.95 to 0.85. This allowed the UAS to continue operations without having to resort to entering a safe state.

Citation

Narayan, P. P., Campbell, D. A., & Walker, R. A. (2008, January). Multi-Objective UAS Flight Management in Time Constrained Low Altitude Local Environments. Paper presented at 46th AIAA Aerospace Sciences Meeting and Exhibit, Reno, Nevada

Presentation Conference Type Conference Paper (unpublished)
Conference Name 46th AIAA Aerospace Sciences Meeting and Exhibit
Conference Location Reno, Nevada
Start Date Jan 7, 2008
End Date Jan 10, 2008
Publication Date Jan 7, 2008
Publicly Available Date Jun 8, 2019
Peer Reviewed Peer Reviewed
Pages 1-14
Keywords UAS, UAV, trajectory generation, manoeuvre automata, multi, objective, real time, flight management
Public URL https://uwe-repository.worktribe.com/output/1015347
Publisher URL http://www.aiaa.org/
Additional Information Title of Conference or Conference Proceedings : 46th AIAA Aerospace Sciences Meeting and Exhibit

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AIAA Conference Paper Jan 2008 Reno - Pritesh Narayan - eprints.pdf (295 Kb)
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