Javier Fidalgo, Enrique Domínguez, Ginés Moreno, Fulgencio Buendía, Joao Pedro Duque, GMV; Merle Snijders, Heiko Engwerda, Netherlands Aerospace Centre; Ettore Canestri, Daniel Lopour, Marco Porretta, Natalia Castrillo, EU Agency for the Space Programme; Santiago Perea, European Space Agency; Ilaria Martini, Matteo Sgammini, Juan Pablo Boyero, European Commission

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The Advanced Receiver Autonomous Integrity Monitoring (ARAIM) concept was designed initially to serve the aviation community and civil aviation authorities. Nevertheless, the concept and message provide flexibility, for its use in non-aviation communities. A wide range of applications, especially safety of life (SoL) operations, can in principle take advantage of this service, or a modified version of it, since they have similar, or even more demanding requirements than aviation users. Rail, Maritime and Unmanned Aerial Vehicles (UAVs), were identified as the most promising sectors for the penetration of ARAIM and are considered the target sectors in this work. Nevertheless, Road, Location Based Services (LBS), Time and Synchronization and Space are other User Sectors which could benefit from ARAIM and in which the presented approach could be adopted too. The purpose of this paper is twofold. On the one hand, suitable ARAIM Evolutions are identified and described for covering the User Needs of the most demanding applications among Rail, UAVs and Maritime Sectors. On the other hand, a Proof-Of-Concept of the proposed ARAIM evolutions by a dedicated experimentation is conducted, using SW implementations with the goal to analyse whether the user requirements are met with the current ARAIM aviation solution (version 4.0 of the Algorithm Description Document (ADD)) and with the proposed ARAIM evolutions. It is shown that the original ARAIM concept can already cover several non-aviation applications while the ARAIM Evolutions are able to cover some of the gaps and to satisfy the user needs of a significant subset of the most demanding non-aviation applications operating in non-open sky conditions.