UHF (Ultra-High-Frequency) Propagation in Vegetative Media.

Abstract

The status of experimental and theoretical work dealing with UHF propagation in vegetative media has been investigated. The area of particular interest is work that is applicable to spread-spectrum communication. A literature search revealed that a number of experimental investigations of UHF propagation in vegetative media have been conducted, but that there have been very few wideband experiments that are relevant for spread-spectrum communications. A vast literature exists on the theory of wave propagation in random media in general, but specific application to UHF electromagnetic wave propagation in forests appears to be lacking. An outline of the application of propagation-mechanism theory is included together with a brief discussion of the characterization of a vegetative medium. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Apr 01, 1980
Accession Number
ADA171991

Entities

People

  • Raymond A. Nelson

Organizations

  • Battelle Memorial Institute

Tags

Communities of Interest

  • Advanced Electronics
  • Energy and Power Technologies
  • Materials and Manufacturing Processes
  • Sensors
  • Space

DTIC Thesaurus Topics

  • Antenna Radiation Patterns
  • Bandwidth
  • Computational Science
  • Databases
  • Diffraction
  • Electromagnetic Fields
  • Electromagnetic Radiation
  • Electromagnetic Scattering
  • Electromagnetic Shielding
  • Electromagnetic Wave Propagation
  • Network Science
  • Physics Laboratories
  • Radio Equipment
  • Radio Transmission
  • Refraction
  • Refractive Index
  • Waveforms

Readers

  • Electromagnetic Wave Scattering and Antenna Radiation Engineering
  • Forest Ecology
  • Theoretical Analysis.