PENETRATION OF VLF PROPAGATING MODES INTO AN ANISOTROPIC STRATIFIED IONOSPHERE AND INTO THE SEA.

Abstract

The mode theory of very low frequency radio propagation is adapted to determine (1) the electric and magnetic fields in a plane-stratified anisotropic incompressible ionosphere model with arbitrary static magnetic field in each stratum, and (2) the polarization of the electric field penetrating into the earth, both due to a distant VLF transmitter on the surface of the earth. The earth-ionosphere guide is assumed to be spherical and to support quasi TM and TE modes. The procedure for determining the signals in the ionosphere model for a given mode is analogous to the calculation for a non-uniform transmission line and employs transmission and admittance matrices relating the field components tangential to the stratum boundaries. The required matrices are no larger than 2 by 2 elements in size, thus facilitating simple and rapid computation. Computer programs to implement these calculations are briefly described. (Author)

Document Details

Document Type
Technical Report
Publication Date
Sep 01, 1965
Accession Number
AD0475845

Entities

People

  • George R. Swain

Organizations

  • University of New Mexico

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Boundaries
  • Computations
  • Computer Programs
  • Computers
  • Electric Fields
  • Electromagnetic Wave Propagation
  • Frequency
  • Ionosphere
  • Magnetic Fields
  • Polarization
  • Radio Transmission
  • Transmission Lines
  • Transmitters
  • Very Low Frequency
  • Wave Phenomena

Fields of Study

  • Physics

Readers

  • Calculus or Mathematical Analysis
  • Space/Atmospheric Physics.
  • Wave Propagation and Nonlinear Chaotic Dynamics.