Review of the Current Status of Four-Dimensional Ionospheric Imaging

Abstract

Recent developments in tomographic imaging allow the use of GPS satellite data to image the Earth's ionosphere. Ground-based GPS receivers monitor the Earth's ionosphere continuously and a comprehensive database of ionospheric measurements suitable for tomographic processing now exists. The tomographic inversion of these GPS data in a three-dimensional time-dependent inversion algorithm can reveal the spatial and temporal distribution of ionospheric electron density. This new technique is unique for studying ionospheric physics because it gives a time-continuous near-global view of the ionosphere. The tomographic algorithms have been under continuous development for several years and are now yielding new geophysical results.

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 2006
Accession Number
ADA477028

Entities

People

  • C. N. Mitchell
  • Gary S. Bust

Organizations

  • University of Texas at Austin

Tags

Communities of Interest

  • Space

DTIC Thesaurus Topics

  • Artificial Satellites
  • Electron Density
  • Electrons
  • Four Dimensional
  • Geography
  • Geometry
  • Ground Based
  • Imaging Techniques
  • Ionosphere
  • Low Earth Orbits
  • Measurement
  • Meteorological Satellites
  • Military Research
  • Navigation
  • Radio Communications
  • Three Dimensional
  • Two Dimensional

Fields of Study

  • Environmental science
  • Physics

Readers

  • Medical Imaging.
  • Plasma Physics.
  • Positioning, Navigation, and Timing (PNT) Technology.

Technology Areas

  • Microelectronics
  • Space