Accession Number : ADA116453

Title :   Geodesic Paths of an Ellipsoid-Mounted Antenna.

Descriptive Note : Technical rept.,


Personal Author(s) : Kim,Jeung G ; Wang,Nan ; Chuang,C D

PDF Url : ADA116453

Report Date : Mar 1982

Pagination or Media Count : 100

Abstract : In applying the high frequency ray technique (GTD) to the radiation problems of an Ellipsoid-mounted antenna, it is essential to determine the geodesic paths on the surface. An efficient, approximate solution for the geodesic paths on the ellipsoid surface, which in turn can be used to model an aircraft or missile fuselage is studied here. Another elaborate method for the geodesic paths emp loying the calculus of variations is also presented to show the validity of the approximation solution. Typical ellipsoid geometries were chosen and tested for various antenna locations on those surfaces. Good agreement between both methods within the significant energy region confirms that the geodesic paths are efficiently solved via this numerical approach. (Author)

Descriptors :   *Aircraft antennas, *Guided missile antennas, Position(Location), Ellipsoids, Electromagnetic pulses, Ray tracing, Regions, Fuselages, Solutions(General), Energy, Surfaces, High frequency, Radiation, Paths, Geometry, Aircraft

Subject Categories : Aircraft
      Electrical and Electronic Equipment
      Electromagnetic Pulses

Distribution Statement : APPROVED FOR PUBLIC RELEASE