Approximate VLF/LF Waveguide Mode Conversion Model. Computer Applications: FASTMC and BUMP

Abstract

This document reviews vlf radio propagation theory, discusses transequatorial vlf propagation at night and during day-night transitions, and presents a vlf propagation model that includes consideration of inhomogeneities both in the vertical direction and along the propagation path. The model considers anisotropic effects (caused by the geomagnetic field). It is implemented into a FORTRAN computer program called FASTMC. This program allows for an arbitrarily oriented and elevated transmitting dipole antenna from which the vertical or horizontal electric field at an arbitrary elevation can be output.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Nov 18, 1980
Accession Number
ADA096240

Entities

People

  • F. P. Snyder
  • J. A. Ferguson

Tags

Communities of Interest

  • Advanced Electronics
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Altitude
  • Cartesian Coordinates
  • Coast Guard
  • Computer Programs
  • Computers
  • Differential Equations
  • Electric Fields
  • Electromagnetic Fields
  • Electromagnetic Wave Propagation
  • Equations
  • Geometry
  • Ionosphere
  • Magnetic Fields
  • Phase Velocity
  • Radio Waves
  • Security
  • Wave Propagation

Readers

  • Computer Science.
  • Electromagnetic Wave Scattering and Antenna Radiation Engineering
  • Space/Atmospheric Physics.