High Frequency Communications Under Adverse Conditions

Abstract

This Paper discusses both ground-wave and sky-wave HF propagation, and derives the equation describing the performance of a radio link when interference or jamming is present. Various techniques are then discussed to improve the link performance under these conditions. The most promising are shown to be directional antennas and spread-spectrum modulation, and these are discussed in great detail.

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1991
Accession Number
ADA252199

Entities

People

  • Herbert M. Federhen

Organizations

  • Institute for Defense Analyses

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies
  • Ground and Sea Platforms
  • Space

DTIC Thesaurus Topics

  • Amplitude Modulation
  • Antenna Radiation Patterns
  • Bandwidth
  • Dipole Antennas
  • Directional Antennas
  • Electronic Countermeasures
  • Frequency Agility
  • Frequency Bands
  • Helical Antennas
  • Over The Horizon Radar
  • Radar
  • Radiation Patterns
  • Radio Communications
  • Radio Equipment
  • Radio Waves
  • Wave Propagation
  • Yagi Antennas

Readers

  • Electromagnetic Wave Scattering and Antenna Radiation Engineering
  • Radio communications and signal processing.