ESA uses cookies to track visits to our website only, no personal information is collected.
By continuing to use the site you are agreeing to our use of cookies. OK Find out more about our cookie policy.
Currently, sci.esa.int is under review and not being updated. For the latest information and news from ESA science missions and scientific results, please visit esa.int. For a comprehensive overview of ESA’s Science Programme and its missions, please refer to science.esa.int. For in-depth technical information aimed at ESA's scientific communities, you may also wish to consult cosmos.esa.int.
Date: 29 April 2009 Depicts: Plots of GPS signal strength Location: Hawaii Copyright: Image courtesy: P. Kintner -- Cornell University, USA Show in archive: true
Impact of solar activity on the signal-to-noise ratio of GPS signal measured by a receiver located in Hawaii on 14 December 2006 (red) compared to what is normally received (blue). The cause was found to be intense radio emissions (called solar radio bursts) from the Sun. These are associated with solar flares.