DABS LINK PERFORMANCE CONSIDERATIONS

The DABS link performance is computed using the present values for the system operating parameters and the available models that describe environmental and aircraft antenna effects. The various fade mechanisms are described, and a statistical determination of performance if proposed. The performance is computed for various sets of conditions including different ground antennas, aircraft maneuvers, antenna pedestal heights, ground reflection coefficients and reduced power. Also discussed are the effects of obstructions and the performance when aircraft are in the cone of silence. The DABS link is found to have very good overall performance with only small regions of reduced reliability that are at low angles or due to maneuvers. Those missed replies due to maneuvers are found to be sporadic from scan to scan.

• Corporate Authors:

  Lincoln Laboratory

  Massachusetts Institute of Technology
  Lexington, MA  United States  02173

  Electronic Systems Division

  Hanscom (LG) Field, ZZ Massachusetts   

  Federal Aviation Administration

  Systems R&D Service, 800 Independence Avenue, SW
  Washington, DC  United States 
• Authors:
  • Schlieckert, G J
• Publication Date: 1975-4-28

Media Info

• Pagination: 61 p.

Subject/Index Terms

• TRT Terms: Air traffic control; Beacons; Data communications; Performance
• Uncontrolled Terms: Data links
• Old TRIS Terms: Fading electromagnetic waves; Performance engineering
• Subject Areas: Operations and Traffic Management;

Filing Info

• Accession Number: 00091277
• Record Type: Publication
• Source Agency: National Technical Information Service
• Report/Paper Numbers: ATC-41
• Contract Numbers: F19628-73-C-0002, DOT-FA72WAI-261
• Files: NTIS, USDOT
• Created Date: Jun 26 1975 12:00AM