Techniques for Adaptive Control of Diffraction Mode and Troposcatter Antennas.

Abstract

Beyond the horizon radio communications via troposcatter or diffraction modes are frequently troubled by bending of the RF rays due to changes in the atmospheric index of refraction. This can cause the received angle of arrival to appear outside the antenna's main lobe. A possible solution is to adapt the antenna's response to these changes. This report discusses possible state-of-the-art techniques, tradeoffs, potential problems and cost aspects for developing an adaptive antenna control system for use on existing troposcatter/diffraction mode antenna dishes. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Sep 01, 1976
Accession Number
ADA031579

Entities

People

  • George E. Krause
  • Paul C. Ng

Organizations

  • United States Army Communications-Electronics Command

Tags

Communities of Interest

  • Advanced Electronics
  • Energy and Power Technologies
  • Sensors

DTIC Thesaurus Topics

  • Angle Of Arrival
  • Antennas
  • Automatic
  • Beam Steering
  • Closed Loop Systems
  • Control Systems
  • Data Processing
  • Diffraction
  • Feedback
  • Frequency
  • Information Processing
  • Open Loop Systems
  • Radio Communications
  • Refraction
  • Refractive Index
  • Security
  • Steering

Readers

  • Economics
  • Phased Array Antenna Design.
  • Wave Propagation and Nonlinear Chaotic Dynamics.