Practical implementation of satellite navigation safety assessment

This paper presents the methodology and a practical implementation approach to perform GNSS Safety Assessment and Certification with due consideration of the satellite navigation system users. It places Galileo GNSS in a tota l system that includes vehicles, on-board equipment, crews and traffic cont rollers and defines the necessary organisation for implementing safety anal yses right from the early design phases of navigation systems. Civil aviati on has very demanding requirements based on objectives for air navigation s afety. It is much better organised on a worldwide basis than other GNSS use rs and is considered in this paper as the leading study case. Some methods are then proposed to build a bridge between all user organisations and to s et up a common approach to certification.