Global distribution of GPS phase tracking failures and total electronic content measurement failures during the magnetic storms on May 15, 2005 and November 20, 2003

Based on data from the global network of GPS receivers, failures of the GPS navigation signal phase tracking during two strong magnetic storms are considered. It is shown that the failure density at the main frequency L1 increases to 0.25%, and up to 3% at the auxiliary frequency L2, that exceeds the background level by several times. The number of failures of the total electronic content (TEC) measurements during the superstorm on November 20, 2003, increased by ~50 times relative to the background level. It was found that during super storms, the greatest number of phase tracking failures is observed in regions of low and high latitudes. At the same time, the area of the greatest failures of TEC measurements corresponds to the auroral oval boundaries.

Y.V. Yasyukevich, E.I. Astafyeva, I.V. Zhivetyev, A.P. Maksikov. Global distribution of GPS phase tracking failures and measurement failures of the total electronic content during magnetic storms on May 15, 2005 and November 20, 2003 \\ Solar-Terrestrial Physics. Vol. 1, No. 4, pp. 58-65, 2015 DOI: 10.12737/13459.