Pattern Measurement and Modeling of Full-Scale VHF Antennas in a Thailand Tropical Forest

Abstract

Measurements of the radiation patterns of full-scale simple VHF antennas (Half-wavelength dipoles) were performed while the antennas were situated in a second-growth tropical forest in Thailand. The data was processed statistically using a digital computer to provide contour plots of the median signal strength as a function of azimuth and elevation angle. In addition to the contour plots of the radiation patterns for the two polarizations, estimators of the standard deviations of the signal strength, and a comparison of the relative gains of the average signal strength at the measured pattern maxima are provided.

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1971
Accession Number
AD0738177

Entities

People

  • G. E. Barker
  • W. A. Hall

Organizations

  • SRI International

Tags

Communities of Interest

  • Advanced Electronics
  • Air Platforms

DTIC Thesaurus Topics

  • Accuracy
  • Aircrafts
  • Antenna Feeds
  • Antenna Radiation Patterns
  • Attenuation
  • Communication Systems
  • Computer Programs
  • Data Processing
  • Environment
  • Forests
  • Information Science
  • Mathematical Models
  • Measurement
  • Recording Systems
  • Reliability
  • Transmitting
  • Tropical Forests

Readers

  • Phased Array Antenna Design.
  • Radar Systems Engineering.
  • Regression Analysis.