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1 results

  • Mapping and Survey of Plasma Bubbles over Brazilian Territory

  • L. F. C. de Rezende, E. R. de Paula, I. J. Kantor, P. M. Kintner
  • Journal:
    The Journal of Navigation / Volume 60 / Issue 1 / January 2007
    Published online by Cambridge University Press:
    15 December 2006, pp. 69-81
    Print publication:
    January 2007

  • Ionospheric plasma irregularities or bubbles, that are regions with depleted density, are generated at the magnetic equator after sunset due to plasma instabilities, and as they move upward they map along the magnetic field lines to low latitudes. To analyse the temporal and spatial evolution of the bubbles over Brazilian territory, the mapping of ionospheric plasma bubbles for the night of 17/18 March 2002 was generated using data collected from one GPS receiver array, and applying interpolation techniques. The impact on the performance of Global Navigation Satellites System (GNSS) and on the Space Based Augmentation System (SBAS) in the tropical regions of the GPS signal losses of lock and of the signal amplitude fades during ionospheric irregularities is presented.