An Investigation of Methods for Improving Models of Ionospheric Plasma- Density Irregularities and Radio-Frequency Scintillation

Abstract

Many modern military systems used for communications, command and control, navigation, and surveillance depend on reliable and relatively noise- free transmission of radiowave signals through the earth's ionosphere. Small- scale irregularities in the ionospheric density can cause severe distortion, known as radiowave scintillation, of both the amplitude and phase of these signals. The WBMOD computer program can be used to estimate these effects on a wide range of systems. The objective of this study is to investigate improvements to the WBMOD model based on extensive data sets covering both the equatorial and high-latitude regimes. This report summarizes the work completed during the second year, which include completion of the new models for the equatorial region and initial development of for the high latitude (auroral and polar cap) region. Ionosphere, Ionospheric density irregularities, Equatorial region radiowave scintillation, Modelling.

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Document Details

Document Type
Technical Report
Publication Date
Nov 01, 1993
Accession Number
ADA278568

Entities

People

  • James A. Secan
  • Robert M. Bussey

Organizations

  • Northwest Research Associates

Tags

DTIC Thesaurus Topics

  • Air Force
  • Ascension Island
  • Command And Control
  • Computer Programs
  • Data Reduction
  • Data Sets
  • Diurnal Variations
  • Equatorial Regions
  • Frequency
  • Ground Stations
  • High Latitudes
  • Ionospheric Scintillation
  • L Band
  • Latitude
  • Radio Frequency
  • Seasonal Variations
  • Statistics

Fields of Study

  • Physics

Readers

  • Astronomy and Astrophysics.
  • Computational Modeling and Simulation

Technology Areas

  • Fully Networked C3
  • Fully Networked C3 - Command and Control