Abstract
We present Galileo Open Service Navigation Message Authentication (OSNMA) observed operational information and key performance indicators (KPIs) from the analysis of a four day long dataset collected in static open sky condition in southern Finland and using our in-house developed OSNMA implementation. In particular, we present a timeline with authentication related events such as authentication status and type, dropped navigation pages and failed cyclic redundancy checks. We also report KPIs such as the number of simultaneously authenticated satellites over time, percentage of authenticated fixes and time to first authenticated fix, and study how the satellite visibility affects these figures. Finally, we analyze situations where it was not possible to reach an authenticated fix, and offer our findings on the observed patterns.
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