Los ingleses del MCA han sacado una nota informativa avisando que la elevada actividad solar puede afectar a los datos de tiempo y posición que facilitan los satelites del GPS. Afortunadamente los profesionales no solo dependen del chino, pero en el siguiente gráfico se pueden ver la de equipos que pueden usar la señal del GPS, me ha sorprendido la Giro, supongo que será alguna modernidad para recuperarse antes en caso de “black out” o para ajustar el norte. Visto lo que afecta a los barcos, cualquiera se sube a un avión!!
During 2012 to 2015, the combination of solar maximum with the possible reduction in operational GPS satellites, compounded by the limitations of the Galileo and GLONASS constellations, may pose a real impact on maritime navigation.
The effects of the ionosphere, if not mitigated, can introduce measurement errors of greater than 10 m (even for DGPS users) and in severe conditions, the receiver can lose lock on the signal. Users of dual and multiple frequency GNSS receivers will be less affected.
Adverse conditions can persist for several hours, presenting a significant issue for navigation. The Space Weather Prediction Center (SWPC) in the United States of America provides alerts and warnings on their website at www.swpc.noaa.gov/index.html to show GNSS users where problems may occur and the potential effects on their operations.The UK Hydrographic Office (UKHO) will issue navigation warnings on the basis of information provided to them by the SWPC or the UK Met Office. An example of the type of warning is as follows;
NAVAREA ?? ??/13
SPACE WEATHER.
1. STRONG SOLAR RADIATION STORM IN PROGRESS UNTIL 081000 UTC JAN. RADIO
AND SATELLITE NAVIGATION SERVICES MAY BE AFFECTED.
2. CANCEL THIS MSG 081100 UTC JAN.
