Space Weather pp 129-146 | Cite as

Space Weather Influence on Satellite-based Navigation and Precise Positioning

  • R. Warnant
  • S. Lejeune
  • M. Bavier
Part of the Astrophysics and Space Science Library book series (ASSL, volume 344)


Global Navigation Satellite Systems (GNSS) are widely used to measure positions with accuracies ranging from a few mm to about 20 m. The effect of the Earth ionosphere on GNSS signal propagation is one of the main error sources which limits the accuracy and the reliability of GNSS applications. In particular, disturbed Space Weather conditions can be the origin of strong variability in the ionosphere Total Electron Content (TEC) which itself degrades the accuracy of GNSS applications. Space Weather effects on GNSS depend very much on the type of application. In this paper, we discuss the effects of Space Weather conditions on differential positioning with the Differential GPS (DGPS) technique and on relative positioning with the Real Time Kinematic (RTK) technique. We show that DGPS is affected by medium to large-scale gradients in TEC mainly observed at solar maximum when RTK will be degraded by smaller-scale ionospheric variability due to scintillations, TEC noise-like behaviour and Travelling Ionospheric Disturbances


Global Position System Global Navigation Satellite System Global Navigation Satellite System Total Electron Content Space Weather 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Springer 2007

Authors and Affiliations

  • R. Warnant
    • 1
  • S. Lejeune
    • 1
  • M. Bavier
    • 1
  1. 1.Royal Observatory of BelgiumAvenue Circulaire3, B-1180BrusselsBelgium

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