The Voliera (overall) project has been conceived to develop a stand-alone localization platform independent from the current on-board subsystem with the aim to minimize the wayside components linked to the localization. 
Voliera project foresees different  phases by following an engineering development.
In the phase 2 there are 2 main goals:
-develop the tools needed to verify the properties of the sensor for certification purpose.. 
-HW platform design for on-line computation of the proposed functionalities and the algorithm development to work on-line on the defined platform.
Four different prototypes, to be integrated in a unique platform, will be arranged, each of them referred to the functionalities to be achieved:
• Enhanced odometry IMU based
• Enhanced odometry Visual based;
• 3D localization information;
• Track Discrimination information.
Based on the proper selection of HW equipment and developing  suitable algorithm for real-time computation, Voliera system will be applied in non-vital applications and a test campaign will be performed to verify the applicability of the defined solution.