GPS World, September 2016
into a software receiver enabling the supply of continuous and corrected data to the user CONCLUSION In this article we have introduced the first quad frequency cycle slip detection algorithm with an efficiency that is clearly a step forward This innovative detection method opens new doors to numerous research and commercial applications Every Galileo user whether civil or military will be able to benefit from better quality positioning especially under harsh ionospheric conditions not only where the ionosphere is particularly restless such as in the equatorial and polar regions but also at any latitude during an ionospheric disturbance With regard to precise positioning this is yet another step that reinforces Galileos competitiveness against other dual or triple frequency systems ACKNOWLEDGMENTS This article is based on the paper Cycle Slips Detection in Quad Frequency Mode Galileos Contribution to an Efficient Approach Under High Ionospheric Activity the winning submission to the 2014 2015 Students Contest of the Comité de Liaison des Géomètres Européens in the Galileo EGNOS Copernicus category which was sponsored by the GSA the European Global Navigation Satellite Systems Agency LAURA VAN DE VYVERE received an M Sc in geomatics and geometrology from the Université de Liège Belgium in 2015 Her masters thesis was dedicated to Galileo cycle slip detection under extreme ionospheric activity In 2015 she joined M3 Systems Belgium in Wavre as a radionavigation project engineer and is currently involved in GNSS reflectometry and GNSS hybridization projects RENÉ WARNANT received an M Sc in physics in 1988 and a Ph D in physics with a specialty in GNSS in 1996 both from the Université catholique de Louvain Louvain la Neuve Belgium He started his career as a geodesist at the Royal Observatory of Belgium in 1988 Since June 2011 he is a full time professor and head of the Geodesy and GNSS Laboratory at the University of Liège where he is responsible for education in the field of space geodesy and GNSS MORE ONLINE Further Reading For references related to this article go to gpsworld com and click on More in the navigation bar then on Innovation 56 GPS WORLD WWW GPSWORLD COM SEPTEMBER 2016
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