Secure Position and Time Information by Server Side PRS Snapshot Processing

Alexander Rügamer, Daniel Rubino, Ivana Lukcin, Simon Taschke, Manuel Stahl, Wolfgang Felber

Abstract:	An alternative way to benefit from spoofing-resistant Galileo Public Regulated Service (PRS) signals is to use a server side processing concept, where all security-related processing steps are outsourced. Having outlined the architecture with user terminal, communication channel and remote server, the snapshot positioning algorithms with different pseudorange reconstruction methods are presented. To reduce the snapshot size, data compression methods are possible, however, degrading the effective C/N0. The results are demonstrated, processing E1 Pseudo-PRS signals from an RF constellation simulator and applying different compression techniques. Multiple raw data snapshots, with sizes from 810 to 10 kByte are evaluated providing Galileo E1 PRS snapshot positioning 1? accuracy from 1.1 to 6.0 m. Finally, a method to estimate the accuracy from a single snapshot result is outlined.
Published in:	Proceedings of the 29th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS+ 2016) September 12 - 16, 2016 Oregon Convention Center Portland, Oregon
Pages:	3002 - 3017
Cite this article:	Rügamer, Alexander, Rubino, Daniel, Lukcin, Ivana, Taschke, Simon, Stahl, Manuel, Felber, Wolfgang, "Secure Position and Time Information by Server Side PRS Snapshot Processing," Proceedings of the 29th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS+ 2016), Portland, Oregon, September 2016, pp. 3002-3017. https://doi.org/10.33012/2016.14781
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