An efficient algorithm for smoothing airspace congestion by fine-tuning take-off times

Jenaro Nosedal, Miquel A. Piera, Sergio Ruiz, Alvaro Nosedal

Research output: Contribution to journalArticleResearchpeer-review

27 Citations (Scopus)

Abstract

Current technological advances in communications and navigation have improved air traffic management (ATM) with new decision support tools to balance airspace capacity with user demands. Despite agreements achieved in flying reference business trajectories (RBTs) among different stakeholders, tight spatio-temporal connectivity between trajectories in dense sectors can cause perturbations that might introduce time or space deviations into the original RBTs, thus potentially affecting other 4D trajectories. In this paper, several challenging results are presented by properly tuning the Calculated Take-Off Times (CTOTs) as a tool for mitigating the propagation of perturbations between trajectories that can readily appear in dense sectors. Based on the identification of "collective microregions", a tool for predicting potential spatio-temporal concurrence events between trajectories over the European airspace was developed, together with a CTOT algorithm to sequence the departures that preserve the scheduled slots while relaxing tight trajectory interactions. The algorithm was tested by considering a realistic scenario (designed and analyzed in the STREAM project (Stream, 2013)) to evaluate relevant ATM KPIs that provide aggregated information about the sensitivity of the system to trajectory interactions, taking into account the system dynamics at a network level. The proposed approach contributes to enhancing the ATM capacity of airports to mitigate network perturbations. © 2014 Elsevier Ltd.
Original languageEnglish
Pages (from-to)171-184
JournalTransportation Research Part C: Emerging Technologies
Volume44
DOIs
Publication statusPublished - 1 Jan 2014

Keywords

  • Air traffic management
  • Constraint programming
  • Decision support tools
  • Trajectory-based operations

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