This report explains the operation of the DABS uplink encoder and provides information useful in diagnosing its performance. Several techniques which may be useful in analyzing encoder operation are presented. One technique involves only the use of address-parity tables and modulo-2 addition. The address-parity tables included are based upon the encoding polynomial prescribed in 'Provisional Signal Formats for the Discrete Address Beacon System,' Lincoln Laboratory Project Report ATC-30 Rev. 1, dated 25 April 1974. The error detection and correction properties of polynomial encoding schemes are not the subject of this report.

  • Supplemental Notes:
    • See also report dated 25 Apr 74, AD-778 387.
  • Corporate Authors:

    Lincoln Laboratory

    Massachusetts Institute of Technology
    Lexington, MA  United States  02173

    Federal Aviation Administration

    Systems R&D Service, 800 Independence Avenue, SW
    Washington, DC  United States 
  • Authors:
    • Samson, J R
  • Publication Date: 1975-3-4

Media Info

  • Pagination: 46 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00090427
  • Record Type: Publication
  • Source Agency: National Technical Information Service
  • Report/Paper Numbers: ATC-40
  • Contract Numbers: DOT-FA72WAI-261,, F19628-73-C-0002
  • Files: NTIS, USDOT
  • Created Date: May 29 1975 12:00AM