The results of the (Litchford) Beacon-based Collision Avoidance System concept feasibility evaluation are reported. Included are a description of the concept, analysis and flight test results. The system concept is based on the range and bearing measurements for detecting and resolving a threat. The experimental hardware, developed under Contract No. DOT-TSC-1103, Task 1-8, did not implement the automatic radar selection and lock-on mode and the capability to compute target range and bearing in real time which the concept requires. These enhancements are currently being implemented. All three generic modes of the BCAS were evaluated. These are: the passive (listen-in), the active (interrogate by on-board transmitter), and the combined (active-passive). Also, reported are results are results of the comprehensive in-house study effort conducted on the azimuth signal requirements and on single-site feasibility. It is concluded that the BCAS is a technically feasible concept and that the passive mode with an azimuth reference signal would be more accurate and less troublesome than other BCAS alternatives. For each operating mode there are geometries in which system performance fails or is degraded to some degree. System reliability may therefore require the implementation of various operating modes. (Author)

  • Corporate Authors:

    Transportation Systems Center

    55 Broadway, Kendall Square
    Cambridge, MA  United States  02142
  • Authors:
    • Vilcans, J
    • Quish, E
    • Raudseps, J G
    • Glynn, H
    • Goldstein, B S
  • Publication Date: 1978-7

Media Info

  • Pagination: 400 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00186054
  • Record Type: Publication
  • Source Agency: National Technical Information Service
  • Report/Paper Numbers: TSC-FAA-78-9, FAA-RD-78-53
  • Files: NTIS
  • Created Date: Dec 29 2002 12:00AM