Improving Galileo OSNMA Time To First Authenticated Fix

arXiv:2403.14739v1 Announce Type: new
Abstract: Galileo is the first global navigation satellite system to authenticate their civilian signals through the Open Service Galileo Message Authentication (OSNMA) protocol. However, OSNMA delays the time to obtain a first position and time fix, the so-called Time To First Authentication Fix (TTFAF). Reducing the TTFAF as much as possible is crucial to integrate the technology seamlessly into the current products. In the cases where the receiver already has cryptographic data available, the so-called hot …

arxiv authenticate authentication called civilian cs.cr eess.sp fix global message navigation protocol satellite service signals system