Stochastic Effects on Oblique HF (High Frequencies) Propagation

Abstract

A model for the calculation of the stochastic effects on transionospheric radio wave propagation due to structured ionization, developed in recent years, has been applied to internally reflected paths at high frequencies (HF). Measurements of signal spreading in the delay and doppler domains obtained by the HF Channel Probe experiment in the polar region were used to test the applicability of the transionospheric scintillation model to oblique, internal HF paths. Oblique soundings made by the Channel Probe experiment provide the ionospheric profile through which rays can be numerically traced and model calculations performed. A nonlinear regression routine is used to obtain model parameters providing the best fit to the data. Good fits are obtained and that the resulting model parameters are consistent with independent measurements. Keywords: High frequency propagation; Ionogram scaling; Irregularities; Power spectra; Scattering; Scintillation; Spectral index; Striations.

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Document Details

Document Type
Technical Report
Publication Date
Jan 31, 1986
Accession Number
ADA176015

Entities

People

  • L. J. Nickisch

Tags

Communities of Interest

  • Energy and Power Technologies
  • Space
  • Weapons Technologies

DTIC Thesaurus Topics

  • Air Force
  • Carrier Frequencies
  • Communication Systems
  • Electron Density
  • Governments
  • High Latitudes
  • Ionosphere
  • Measurement
  • Military Research
  • Polar Regions
  • Power Spectra
  • Radio Waves
  • Refractive Index
  • Scattering
  • Security
  • Three Dimensional
  • Wave Propagation

Fields of Study

  • Physics

Readers

  • Space/Atmospheric Physics.