The rate of errors in air traffic operations has increased significantly over the past several years, according to the U.S. Dept. of Transportation. In this paper, the authors introduce Tactical Separation Assisted Flight Environment (TSAFE), a new decision support tool that has the potential to replace Conflict Alert, the legacy software used in detecting and warning air traffic controllers of imminent conflicts. TSAFE generates two predicted trajectories for each aircraft in order to account for uncertainties in pilot intent. The flight plan, tracking data, and atmospheric data are used to synthesize one of the trajectories. The other trajectory, which is a short-range projection based on the current velocity, is a dead- reckoning trajectory. Additional methods were developed for predicting critical leveloff maneuvers and detecting and modeling unplanned turns. Using data from 58 operational error cases, TSAFE was tested with an automated system replaying the tracking data for each case. Results showed that TSAFE was able to provide timely warnings of imminent conflicts more consistently than the legacy software Conflict Alert.

  • Availability:
  • Corporate Authors:

    Air Traffic Control Association Institute, Incorporated

    2300 Clarendon Boulevard, Suite 711
    Arlington, VA  United States  22201
  • Authors:
    • Paielli, R A
    • Erzberger, H
  • Publication Date: 2005


  • English

Media Info

  • Features: Figures; References; Tables;
  • Pagination: p. 83-106
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00989359
  • Record Type: Publication
  • Source Agency: UC Berkeley Transportation Library
  • Files: BTRIS, TRIS
  • Created Date: May 3 2005 12:00AM