THE EFFECT OF IONOSPHERIC TILT ON RADIO DIRECTION FINDING POSITION ESTIMATES

It is generally accepted that the ionosphere tilts; that is to say, an isoionic layer is not at constant height above the surface of the earth. Ionospheric tilt has the effect of deflecting a radio ray out of its great-circle plane and returning it to earth at an angle not that of the true bearing from a receiver to a transmitter. The magnitude of error introduced by this effect on radio direction finding (RDF) position estimates was studied. A model assigning a tilt bias of less than three degrees to each RDF station bearing was constructed. Analysis of a six-station RDF network revealed that this amount of tilt has negligible effect on point estimates of location and their confidence regions.

  • Corporate Authors:

    Naval Postgraduate School

    1 University Circle
    Monterey, CA  USA  93943
  • Authors:
    • Lunde, R K
  • Publication Date: 1972-3

Media Info

  • Pagination: 59 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00035671
  • Record Type: Publication
  • Source Agency: National Technical Information Service
  • Report/Paper Numbers: MA Thesis
  • Files: TRIS
  • Created Date: Oct 27 1972 12:00AM