graduation in 2001 he started working in the field of applied satellite navigation. It was during a young graduate traineeship at ESA’s Galileo Project Office that he took a special interest in GNSS system design and performance aspects. Since 2004 he has been working as systems engineer in the integrity systems department of IfEN GmbH, where he is concerned with algorithm design, software development and performance analysis for several integrity related projects. Ingrid Deuster holds a diploma in Geodesy from the University of Stuttgart. She joined IfEN in 1999 as a systems engineer and has been working since then in the field of GNSS integrity processing. Lately she has been dealing with integrity performance experimentation in the GSTB-...