A Study of Observed and Predicted HF Propagation Characteristics at High Latitudes,

Abstract

Prediction programmes at HF serve as tools for system design, frequency management and daily operations of communication systems. Models used in the prediction programmes of radio propagation through the high latitude ionosphere have relied on extrapolation from low latitudes, and they are inconsistent and incorrect. An HF oblique incidence ionospheric sounder has been developed at FFI and data recorded on one auroral path (285 km) and one sub-auroral, mid-latitude path (1230 km) within Norway. The database contains several years of measurements around sunspot maximum, and it describes the effects of seasonal variations and different degrees of geophysical disturbances.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Feb 29, 1996
Accession Number
ADA306385

Entities

People

  • Vivianne Jodalen

Organizations

  • Norwegian Defence Research Establishment

Tags

Communities of Interest

  • Energy and Power Technologies
  • Space
  • Weapons Technologies

DTIC Thesaurus Topics

  • Bandwidth
  • Communication Systems
  • Data Analysis
  • Doppler Effect
  • Electromagnetic Radiation
  • Electromagnetic Wave Propagation
  • Electrons
  • Geometry
  • Ionization
  • Ionosphere
  • Ionospheric Models
  • Magnetic Disturbances
  • Magnetic Fields
  • Measurement
  • Radio Waves
  • Solar Radiation
  • X Rays

Readers

  • Computational Modeling and Simulation
  • Space/Atmospheric Physics.