TROPICAL PROPAGATION RESEARCH

Abstract

This is the ninth semiannual report of a research project to study radio propagation in tropical areas with heavy vegetation. The experimental results reported here are from the first series of Thailand (Area 2). The test area, which receives about 90 inches of rainfall annually, is covered with extremely thick jungle. Graphs are presented of basic transmission loss as a function of distance out to 1.4 miles for frequencies of 25, 50, 100 and 250 Mc/ s using different transmitting antenna heights, polarizations and transmission paths. The receiving antenna height is fixed at 6 feet. Certain of these tests are compared with identical ones made previously in the jungles near Pak Chong, Thailand, (Area 1), where the vegetation is significantly lower and less dense. The climate in the test area is also described and compared with the climate at Area 1.

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Document Details

Document Type
Technical Report
Publication Date
Jul 31, 1967
Accession Number
AD0673142

Entities

People

  • L. G. Sturgill

Organizations

  • ARCO

Tags

Communities of Interest

  • Advanced Electronics
  • Air Platforms
  • Human Systems

DTIC Thesaurus Topics

  • Asia
  • Climate
  • Corporations
  • Electromagnetic Wave Propagation
  • Engineers
  • Environment
  • Frequency
  • Losses
  • Measurement
  • Polarization
  • Rain
  • Rainfall
  • Southeast Asia
  • Thailand
  • Transmission Loss
  • Transmitting
  • Vegetation

Readers

  • Atmospheric Remote Sensing.
  • Microwave Engineering.
  • Urban Planning and Geography.