BIOGRAPHY Holmer Denks received his engineer diploma in electrical engineering and communications at the University of Kiel, Germany, in 2002. There he was involved in investigation and simulation of communications systems. In 2002 he joined DLR. Since then he works in the field of satellite navigation. Currently he works on simulations of Galileo signals. Alexander Steingass received his engineer diploma in electrical engineering and communications at the University Ulm, Germany, in 1996. In

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... 97 he joined DLR. Since then he works in the field of satellite navigation. He was involved in the early GALILEO signal design and performance analysis. He received his PhD 2002 at the University of Essen/Germany. Since then he was involved in multipath measurements and modelling as well as in interference measurements and modelling. Achim Hornbostel joined the German Aerospace Center (DLR) in 1989 after he had received his engineer diploma in electrical engineering at the University of Hannover in the same year. In 1995 he received the PhD in electrical engineering from the University of Hannover. In 2000 he became member of staff at the Institute of Communications and Navigation at DLR, where he is now leading a working group for receivers and algorithms since 2005. He was involved in several projects for remote sensing, satellite communications and satellite navigation. His main activities are currently in signal propagation and receiver development. Vincent Chopard received his engineer diploma in aeronautical engineering from ENSICA (École nationale supérieure d'ingénieurs de constructions aéronautiques) in Toulouse in 2004. He was then involved in avionics system integration and validation. Since 2005 he has joined Thales and then he works on the algorithmic of satellite navigation. ABSTRACT The new signals and services provided by future GNSSs like Galileo and modernized GPS will foster the use of satellite navigation for safety of life applications, e. g. for precision landing approaches of higher categories in aviation. These new signals and services require the development of advanced receiver technologies, which make full use of the performance provided by the new signal characteristics. In aviation environments various potential interference sources exist, which can degrade the performance of receivers. In particular, DME/TACAN is one of the main interference sources in the E5 Galileo band in aviation environments. Therefore, besides functional receiver validation under nominal conditions also the behaviour of the receiver under strong interference conditions must be tested.