Flight techniques for projectiles
GNSS systems currently equip the majority of navigation systems in external environments thanks to their precision and their global coverage. The past decade has seen the modernization of the GPS and Glonass systems and recently the advent of new GNSS constellations, Galileo and Beidou. These major evolutions are likely to improve the reliability of positioning, its precision and availability. The migration of applications to receivers compatible with these new signals is underway, the aim is being to take full advantage of the performance offered by the new generation of GNSS signals. On the other hand, the design of a receiver is strongly dependent upon the targeted application. In this sense, the choices of signals and algorithmic processing depend on the dynamics of the vehicle and its environment. On the other hand, the ISL has been developing for several years navigation systems for projectiles based on multi-sensor fusion, including GNSS. A projectile is a rotating flying object that requires good precision and high positioning availability. Missions can be short in time and with the possibility of encountering radiofrequency interferences. It is therefore necessary to select the most relevant GNSS processing and to operate the necessary optimizations in order to achieve the mission’s objectives in GNSS degraded environment.
This thesis project aims to design Galileo receiver processing that is appropriate for projectile positioning. The PhD student must
• Study the behaviour of the vehicle, his environment and the mission’s operational conditions
• Propose the signal processing that takes advantage of the performance of modernized signals
• Characterize the solution’s performance and assess its benefit
• Publish research results at national and international conferences and journals