A Direct Spectral Domain Method for Near-ground Microwave Radiation by a Vertical Dipole above Earth in the Presence of Atmospheric Refractivity

Abstract

A spectral domain method is presented to calculate the potential of a vertical dipole in a multilayered medium as a model of long-range radio propagation. The spectral domain Green's function (SDGF) for structures with up to hundreds of thousands of layers is calculated using an efficient matrix formulation, thus enabling simulation of continuously strati ed media. The SDGF is sampled to perform pole/residue-extraction using contour quadratures and to perform a novel asymptotic Filon-Clenshaw-Curtis (FCC) quadrature to calculate the far-field Green's functions. The near-fields are directly calculated using an adaptive Clenshaw-Curtis quadrature without pole-extraction. Results of numerical simulations are presented in the case of a graded-index waveguide and an atmospheric gradient-layer above a realistic lossy ground.

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Document Details

Document Type
Technical Report
Publication Date
Aug 01, 2013
Accession Number
ADA594742

Entities

People

  • Christopher R. Anderson
  • G. D. Durgin
  • R. Bhattacharjea

Organizations

  • United States Naval Academy

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Algorithms
  • Bessel Functions
  • Circuit Boards
  • Contour Integrals
  • Dielectrics
  • Electromagnetic Wave Propagation
  • Equations
  • Extraction
  • Far Field
  • Integrals
  • Materials
  • Near Field
  • Printed Circuits
  • Radiation
  • Simulations
  • Transmission Lines
  • Wave Propagation

Fields of Study

  • Physics

Readers

  • Electromagnetic Wave Scattering and Antenna Radiation Engineering
  • Ocean-Atmosphere Mesoscale Modeling, Data Assimilation, and Flux Boundary Layers