Characterizing the Effects of a Vertical Time Threshold for a Class of Well-Clear Definitions

  title={Characterizing the Effects of a Vertical Time Threshold for a Class of Well-Clear Definitions},
  author={Jason Upchurch and C{\'e}sar A. Mu{\~n}oz and Anthony Narkawicz and Maria C. Consiglio and P Chamberlain James},
  journal={Air traffic control quarterly},
A fundamental requirement for the integration of unmanned aircraft into civil airspace is the capability of aircraft to remain well clear of each other and avoid collisions. This requirement has led to a broad recognition of the need for an unambiguous, formal definition of well clear. Any such definition must be interoperable with existing airborne collision avoidance systems (ACAS). A particular class of well-clear definitions uses logic checks of independent distance thresholds as well as… 

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