VIAVI altGNSSSM GEO SecureTimeSM services

VIAVI’s altGNSSSM GEO SecureTimeSM services deliver nanoseconds-accurate UTC timing via L-Band and Ku-Band satellite signals, for use in critical infrastructure including 5G networks, transportation, data centres, smart grid, high-frequency trading, military and first responder communications, and satellite terminals. Operating completely independently of traditional GPS and GNSS, the altGNSS GEO service is difficult to jam or spoof and features broad global coverage, improving resistance to attacks.

SecureTime features Navigation Message Authentication (NMA), which uses encryption to detect spoofing in any of the signals received from all sources — including GPS that does not support NMA. It builds on VIAVI’s existing multisource assurance, combining signals from government and commercial constellations across geosynchronous orbit (GEO), low Earth orbit (LEO) and medium Earth orbit (MEO).

The services have been tested in live-sky battlefield scenarios, including providing assured PNT in a simulated warzone with complete denial of GPS and GNSS services. VIAVI will integrate these services in its own products while also providing receivers for third-party solution providers wishing to leverage the altGNSS services in their own systems.