This report provides extensive comparisons of measured propagation data with predictions made by the IF-77 (ITS-FAA-77) and other propagation models. Although IF-77 was developed for aeronautical applications, it can be used for some point-to-point propagation paths, and the measured data selected for comparison includes point-to-point as well as aeronautical paths. Approximately 870,000 hours of data are associated with the 242 paths used. Predictions made with IF-77 were always best or second best were substantially better than those made for free space conditions. The IF-77 model has a wide range of application and provides predictions compatible with the more specialized models tested. A discussion of the aeronautical propagation data pool from which the data were selected is included as an appendix. (Author)

  • Corporate Authors:

    Institute for Telecommunication Sciences

    National Telecommunications and Information Administration
    Boulder, CO  United States 

    Federal Aviation Administration

    Systems R&D Service, 800 Independence Avenue, SW
    Washington, DC  United States 
  • Authors:
    • Johnson, M E
    • Gierhart, G D
  • Publication Date: 1979-8

Media Info

  • Pagination: 444 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00305518
  • Record Type: Publication
  • Source Agency: National Technical Information Service
  • Report/Paper Numbers: FAA-RD-79-9 Final Rpt.
  • Contract Numbers: DOT-FA68QAI-145, DOT-FA78WAI-840
  • Files: NTIS, TRIS, USDOT
  • Created Date: Feb 11 1980 12:00AM