Incorporating Digisonde Traces into the Ionospheric Data Assimilation Three Dimensional (IDA3D) Algorithm

Abstract

This study incorporated virtual height traces measured by ionosondes directly into an objective analysis (OA) algorithm. The OA algorithms ingest available data sets to construct coherent maps that represent the larger scale behavior of the ionosphere. A forward model which calculates the virtual height profile form a given electron density distribution was developed and incorporated into the Ionospheric Data Assimilation Three Dimensional (IDA3D) OA algorithm. In addition, IDA3D was modified to ingest nonlinear observations. Initial tests of the modified IDA3D indicate a good fit between the IDA3D predictions of the virtual height to the observed virtual heights. The IDA3D electron density profiles agree well with the electron densities calculated by a state-of-the-art digisonde inversion algorithm. In addition, the valley region between the E and F layers is generated in IDA3D by incorporating the virtual height traces.

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Document Details

Document Type
Technical Report
Publication Date
May 11, 2006
Accession Number
ADA448071

Entities

People

  • Trevor W. Garner

Organizations

  • University of Texas at Austin

Tags

Communities of Interest

  • Space

DTIC Thesaurus Topics

  • Air Force
  • Algorithms
  • Altitude
  • Assimilation
  • Databases
  • Electron Density
  • Electrons
  • Grids
  • Inversion
  • Ionograms
  • Ionosondes
  • Ionosphere
  • Magnetic Fields
  • Observation
  • Refractive Index
  • Three Dimensional
  • United States

Readers

  • Fire Suppression Systems Design.
  • Space/Atmospheric Physics.
  • Wave Propagation and Nonlinear Chaotic Dynamics.

Technology Areas

  • Microelectronics