The FAA Automatic Traffic Advisory and Resolution Service (ATARS) is a ground-based collision avoidance system which utilizes surveillance data from the Discrete Address Beacon System (DABS). It computes traffic advisories and collision warnings using a ground computer independent of the ATC computer system, and delivers these messages to aircraft via the DABS data link. ATARS provides both a traffic advisory and a resolution (collision avoidance) service to aircraft equipped with a DABS transponder, an altitude encoder (mode C), and an ATARS display. The objective of the ATARS effort reported was the design of a traffic advisory service that complements the ground based resolution service while being compatible with the other applications being developed for the DABS data link. The main technical issue was the construction of a set of message formats that provides the pilot with all information he requires while minimizing data link loading. Furthermore, this message set had to support a wide spectrum of onboard equipment, from a simple ring of lights to a sophisticated graphics system. (Author)

  • Corporate Authors:

    Massachusetts Institute of Technology

    Linclon Laboratory, 244 Wood Street
    Lexington, MA  United States  02420-9180

    Federal Aviation Administration

    Systems R&D Service, 800 Independence Avenue, SW
    Washington, DC  United States 
  • Authors:
    • Gertz, J L
  • Publication Date: 1980-11-3

Media Info

  • Pagination: 147 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00329002
  • Record Type: Publication
  • Source Agency: National Technical Information Service
  • Report/Paper Numbers: ATC-101, FAA-RD-80-117
  • Contract Numbers: F19628-80-C-0002,, DOT-FA72WAI-261
  • Files: NTIS, USDOT
  • Created Date: May 21 2002 12:00AM