Analysis of Electromagnetic Propagation Over Variable Terrain Using the Parabolic Wave Equation

Abstract

This report describes the fundamental physics and basic numerical algorithms that form the basis of a range-dependent microwave propagation model. The model accounts for the effects of nonhomogeneous atmospheric refractivity fields, finite surface conductivity and variable surface terrain elevation. Both vertical and horizontal field polarization and general antenna radiation patterns are included in the analysis. The electromagnetic field propagation is modeled using the splitstep Fourier parabolic wave equation (SSFPE) algorithm, modified to account for an impedance-type boundary condition. The various approximations used in developing the SSFPE algorithm are discussed, along with local and global error estimates. Parabolic wave equation, Microwave propagation, Variable terrain microwave propagation, Pattern propagation factor.

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Document Details

Document Type
Technical Report
Publication Date
Oct 01, 1991
Accession Number
ADA248061

Entities

People

  • Frank J. Ryan

Tags

Communities of Interest

  • Advanced Electronics
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Antenna Radiation Patterns
  • Antennas
  • Computers
  • Dielectric Permittivity
  • Differential Equations
  • Electromagnetic Fields
  • Electromagnetic Radiation
  • Electromagnetism
  • Equations
  • Magnetic Fields
  • Partial Differential Equations
  • Radiation
  • Radiation Patterns
  • Radio Waves
  • Standing Waves
  • Wave Equations
  • Wave Propagation

Readers

  • Calculus or Mathematical Analysis
  • Microwave Engineering.
  • Wave Propagation and Nonlinear Chaotic Dynamics.