This report presents the results of an analytical study of the merits and mechanization requirements of horizontal collision avoidance systems (CAS). The horizontal and combined horizontal/vertical maneuvers which provide adequate miss distance with minimum initial range, minimum deviation off track, and acceptable turn rates are found. Horizontal maneuvers are compared with vertical maneuvers and speed control for collision avoidance in terms of initial range requirements, deviation off track and flight path time loss. Requirements for implementing an airborne horizontal CAS are outlined. Digital filtering is analyzed for estimating airspeed and relative heading from noisy range and bearing measurements between aircraft. An algorithm (suitable for airborne mechanization) is developed for computing appropriate collision avoidance maneuvers. The effects of dynamic and measurement errors on the CAS's ability to provide safe miss distance are examined.

  • Corporate Authors:

    Systems Control, Incorporated

    260 Sheridan Avenue
    Palo Alto, CA  United States  94306

    Federal Aviation Administration

    Systems R&D Service, 800 Independence Avenue, SW
    Washington, DC  United States 

    Transportation Systems Center

    55 Broadway, Kendall Square
    Cambridge, MA  United States  02142
  • Authors:
    • Sorensen, J A
    • Merz, A W
    • Cline, T B
    • Karmarkar, J S
    • HEINE, W
  • Publication Date: 1973-12

Media Info

  • Pagination: 272 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00090159
  • Record Type: Publication
  • Source Agency: National Technical Information Service
  • Report/Paper Numbers: Final Rpt.
  • Contract Numbers: DOT-TSC-535
  • Files: NTIS, TRIS, USDOT
  • Created Date: Apr 22 1975 12:00AM