EXPERIMENTAL VERIFICATION OF AN IONOSPHERIC CHANNEL MODEL

Abstract

Specially designed ionospheric propagation measurements were made and analyzed to confirm the validity and accuracy of a proposed ionospheric communication channel model. This stationary channel model incorporates a delay line that is fed by the input (transmitted) signal. Several adjustable taps on the delay line deliver signals with delays corresponding to the relative propagation times of typical ionospheric modes. Each delayed signal is modulated in amplitude and phase by an independent baseband complex bivariate Gaussian random function of time with a zero mean value and quadrature components with equal RMS values that produce Rayleigh fading. Ionospheric measurements were made in 12-kHz bands at two HF frequencies over a 1294-km path. Three samples of 10- to 13-min duration were analyzed for typical daytime and nighttime propagation conditions.

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Document Details

Document Type
Technical Report
Publication Date
Jul 01, 1969
Accession Number
AD0699486

Entities

People

  • C. C. Watterson
  • J. R. Juroshek
  • W. D. Bensema

Organizations

  • Institute for Telecommunication Sciences

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Accuracy
  • Bandwidth
  • Communication Channels
  • Communication Systems
  • Data Science
  • Delay Lines
  • Delta Functions
  • Frequency Bands
  • Frequency Domain
  • Frequency Response
  • Frequency Shift
  • Information Science
  • Measurement
  • Probability
  • Simulators
  • Standards
  • Statistical Analysis

Readers

  • Computational Modeling and Simulation
  • Mathematics or Statistics
  • Radio communications and signal processing.