DABS MODULATION AND CODING DESIGN - A SUMMARY

The Discrete Address Beacon System (DABS) has been designed as an evolutionary replacement for the Air Traffic Control Radar Beacon System (ATCRBS). As with ATCRBS, DABS is a cooperative Air Traffic Surveillance System utilizing ground based sensors (interrogators) and airborne transponders. In addition to its surveillance function, DABS integrally accommodates ground-to-air and air-to-ground data link communication within the interrogations and replies. In DABS, each aircraft transponder may be individually interrogated, using its unique 24-bit address, giving the ground based interrogators freedom to schedule interrogations and replies to make efficient use of the channels essentially independent of the aircraft traffic distribution. The evolutionary constraint on DABS, requiring the capability for one-for-one replacement of ATCRBS ground sensors and transponders, dictated the need to maximize commonality between the two systems. This report presents the rationale for the selection of DABS signalling waveforms and error control techniques.

  • Corporate Authors:

    Massachusetts Institute of Technology

    Linclon Laboratory, 244 Wood Street
    Lexington, MA  United States  02420-9180
  • Authors:
    • Goblick, T J
  • Publication Date: 1976-3-12

Media Info

  • Pagination: 106 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00133362
  • Record Type: Publication
  • Source Agency: National Technical Information Service
  • Report/Paper Numbers: ATC-52, FAA-RD-75-93
  • Contract Numbers: F19628-76-C-0002,, DOT-FA72-WAI-261
  • Files: NTIS
  • Created Date: Jul 13 2002 12:00AM