• DocumentCode
    976826
  • Title

    The CAA Doppler Omnirange

  • Author

    Anderson, S.R. ; Flint, R.B.

  • Author_Institution
    U. S. Dept. of Commerce, Civil Aeronautics Administration, Tech. Dev. Center, Indianapolis, Ind.
  • Volume
    47
  • Issue
    5
  • fYear
    1959
  • fDate
    5/1/1959 12:00:00 AM
  • Firstpage
    808
  • Lastpage
    821
  • Abstract
    This paper describes a VHF omnirange, the operation of which is based upon an application of the Doppler effect. Progress in the development of a Doppler VOR is outlined. The Doppler VOR has a measured 7-to-1 improvement with respect to siting effects when compared to the conventional four-loop VHF omnirange. The wave transmitted by the Doppler VOR is horizontally polarized. The unique interchange in the functions of the 30-cps amplitude modulation and the 30-cps frequency modulation of a 9.96-kc subcarrier is described. The Doppler VOR is shown to be compatible with present VHF omnirange receiving equipment. The results reported in this paper were obtained by experimentation and mathematical analysis.
  • Keywords
    Amplitude modulation; Apertures; Associate members; Computer aided analysis; Doppler effect; Frequency modulation; Mathematical analysis; Polarization; Reflection; Testing;
  • fLanguage
    English
  • Journal_Title
    Proceedings of the IRE
  • Publisher
    ieee
  • ISSN
    0096-8390
  • Type

    jour

  • DOI
    10.1109/JRPROC.1959.287274
  • Filename
    4065740
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=976826