The Atomic Gyroscope for Enhanced Navigation (AGEN) project aims to show the feasibility of the developing such an inertial grade gyroscope for aircraft navigation and delivering higher performances than Ring Laser Gyroscopes while having small dimensions and power consumption. Atomic gyroscopes hold the promise of reaching even better performance levels, but their state of development is presently in the research stage and user requirements in terms of size, power consumption, cost and performances will be analysed and targeted. Such a development may open up new application fields such as unmanned commercial flights, enhanced navigation for UAVs, enhanced marine, sub-marine and Unmanned Surface Vehicle navigation.