Approaches, landings and take-offs, maneuvers or navigation in the terminal zone, are among the most critical tasks in aircraft operation. Today, the only certified navigation system available for landings, ground rolls and take-offs are the ILS and MLS which require heavy airport infrastructures; recently, one can notice a trend towards the GNSS systems (Global Navigation Satellite Systems) which have not the necessary integrity. This clearly highlights the unmet need for new systems which could either replace or complement existing systems. PEGASE is a feasibility study of a new Navigation System which allows a three dimensional truly autonomous approach and guidance for airports and helipads and improves the integrity and accuracy of GNSS differential navigation systems. This new Navigation System relies on three key technologies: ? The specification of a reliable ground reference database ? Innovative correlation techniques between sensors and the onboard ground database ? A servoing algorithm for the management of the trajectories of both fixed wing and rotary wing aircraft. The ambitions of the PEGASE project are twofold. ? it will pave the way for a new all weather autonomous standard Navigation System by validating the technologies necessary to achieve a cost effective navigation means that has higher accuracy and integrity than existing ones; ? it will contribute to demonstrate that such a new Navigation System can help reduce noise levels and fuel consumption through new procedures in the terminal zone and address flow delays in adverse weather conditions. In this way, PEGASE contributes to the enhancement of the future 2012 Air Traffic Management. PEGASE promotes the development of Research and Innovation via the collaboration between highly skilled SMEs and Research Institutions.
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