Experimental results are presented for 30 multipath and ranging test flights involving an FAA KC-135 jet airplane, the NASA ATS-5 satellite, the NASA/Rosman ground station, and the FAA NAFEC facility. Tests included overocean multipath measurements and one-way tone ranging between the ground station and airplane via the satellite. Data were acquired over the North Atlantic at satellite elevation angles between 9 degrees and 31 degrees, within the 1545 to 1655 MHz frequency band allocated for future aeronautical satellite services. Significant multipath experiment results include determination of the multipath signal amplitude statistics, power spectral density, polarization properties, and selective fading characteristics. Multipath results are correlated with theoretical predictions based on use of the physical optics scatter model. Ranging experiment results include performance confirmation of a narrow-band cw tone ranging technique, characterization of the effect of multipath on ranging accuracy, and concept demonstration using low-gain slot dipole aircraft antennas. Comparison of experimental ranging results with theoretical predictions is given. (Author)

  • Supplemental Notes:
    • See also AD-783 587.
  • Corporate Authors:

    Boeing Company

    Commercial Airplane Division, P.O. Box 3707
    Seattle, WA  United States  98124

    Federal Aviation Administration

    Systems R&D Service, 800 Independence Avenue, SW
    Washington, DC  United States 
  • Publication Date: 1973-4

Media Info

  • Pagination: 243 p.

Filing Info

  • Accession Number: 00071876
  • Record Type: Publication
  • Source Agency: National Technical Information Service
  • Report/Paper Numbers: D6-60181 Final Rpt.
  • Contract Numbers: DOT-FA69WA-2109
  • Files: NTIS, USDOT
  • Created Date: Dec 19 1974 12:00AM