Wideband Electromagnetic Scattering/Analysis Program. Electromagnetic Scattering from the Trunks and Branches of Trees

Abstract

The electromagnetic scattering from various parts of a tree is analyzed to find their characteristics for frequencies between 0.3-1.3 GHz. The scattered fields in the vicinity of a tree are found to be relatively insensitive to the dielectric materials used in tree modeling. The RCS of a trunk and its ground interactions are examined and it is found to be 5-7 dB higher for the horizontal than for the vertical polarization for the angles of interest. The difference is due to the reflection coefficients near the Brewster angle. The scattering from branches is shown to have similar polarization difference and is about 20 dB lower than the trunk-ground scattering. The analysis is based on deterministic techniques using the Uniform Geometrical Theory of Diffraction and are compared to eigenfunction solutions and measurements

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Sep 01, 1993
Accession Number
ADA283112

Entities

People

  • A. A. Nowotarski
  • Ronald Joseph Marhefka

Organizations

  • Ohio State University

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Dielectric Permittivity
  • Dielectric Properties
  • Dielectrics
  • Diffraction
  • Electromagnetic Scattering
  • Forests
  • Frequency
  • Frequency Bands
  • Geometry
  • Magnetic Fields
  • Magnetic Properties
  • Materials
  • Measurement
  • Polarization
  • Scattering
  • Three Dimensional
  • Two Dimensional

Fields of Study

  • Physics

Readers

  • Electromagnetic Wave Scattering and Antenna Radiation Engineering
  • Forest Ecology