An analysis was made of the relative accuracy of the digitized radar target symbol position versus the primary radar target. Radar track of one aircraft on radial courses was photographed as displayed in both primary and beacon radar modes, and also as processed through the DAIR system. Quantitative results were statistically analyzed to determine differences between primary radar position and displayed position, and to determine the distribution of the center of the displayed DAIR radar target position about the center of the primary radar target position. Results indicated that the DAIR system tended to display the DAIR center mark at a closer range and at a smaller azimuth angle than the center of the primary radar signal. The altitude of the aircraft did not appear to have any consistent effect on these measurements; however, the range of the aircraft did indicate a tendency to affect the measurements.

  • Corporate Authors:


    ATLANTIC CITY, NJ  United States 

    Federal Aviation Administration

    Systems R&D Service, 800 Independence Avenue, SW
    Washington, DC  United States 
  • Authors:
    • BUSCH, A C
    • Bradbury, P W
  • Publication Date: 1974-10

Media Info

  • Pagination: 33 p.

Filing Info

  • Accession Number: 00080451
  • Record Type: Publication
  • Source Agency: National Technical Information Service
  • Report/Paper Numbers: FAA-NA-74-4 Final Rpt.
  • Files: NTIS, USDOT
  • Created Date: Feb 11 1975 12:00AM