Galileo Public Regulated Services (PRS) with Limited Key Distribution

M. Turner, A. Richardson, J. Haddon, M. Batiste, E. Aguado, B. Wales, M. Dumville, R. Bowden, P. Togneri

Peer Reviewed

Abstract:	The Galileo Public Regulated Service (PRS) provides encrypted Global Navigation Satellite System (GNSS) signals which give it inherent authenticity and anti-spoofing capabilities. The challenge of any such system is to securely distribute keys to authorized users. To address this challenge the UK Space Agency (UKSA) and the UK’s Innovation Agency (Innovate UK), commissioned a set of projects [3] which included EXPLORERS. The EXPLORERS objective was to build a technology demonstrator of a server based system that can deliver Galileo PRS services over a communication link without the associated cryptographic key distribution to user terminals. EXPLORERS includes two server based architectures; PROSPA and ASPIRE. PROSPA [1] provides “snippets” of the satellite transmitted ranging codes to the user terminal over a communications link. ASPIRE [2] processes samples of the received RF signal which are sent back over a communications channel to a central server. This paper provides details and results from the EXPLORERS technology demonstrator. The technology demonstrator has provided potential user groups a first approximation, of the capabilities of Galileo PRS based authentication which will open up opportunities for early experimentation of GNSS authentication services in a wide range of governmental applications.
Published in:	Proceedings of the 28th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS+ 2015) September 14 - 18, 2015 Tampa Convention Center Tampa, Florida
Pages:	3397 - 3404
Cite this article:	Turner, M., Richardson, A., Haddon, J., Batiste, M., Aguado, E., Wales, B., Dumville, M., Bowden, R., Togneri, P., "Galileo Public Regulated Services (PRS) with Limited Key Distribution," Proceedings of the 28th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS+ 2015), Tampa, Florida, September 2015, pp. 3397-3404.
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