Atomic Clocks Time FireWall

GNSS Cyber Security
& Anti-Spoofing

The unique and patented Time FireWall™ (TFW™) which when inserted into a timing network provides security and backup of the accurate time obtained from a GNSS receiver. AccuBeat’s patented Time FireWall™ is a 19 inch 1U unit that is inserted between the antenna and the existing GNSS receiver. The TFW™ receives the GNSS satellite signal from an antenna, checks the integrity of the signal using an internal atomic clock and various techniques and when it determines that the GNSS signal is reliable it passes an RF signal on to the timing network with “a seal of integrity”. If the Time FireWall™ determines that the GNSS signal is unreliable (either due to blocking or jamming or spoofing or any other malicious attacking), the TFW™ sends out a warning alarm and uses its internal satellite signal simulator and Rubidium Atomic Clock to provide an alternate GNSS signal to the customers receiver, allowing continuous and uninterrupted operation of timing and synchronization even in a GNSS denied or spoofed environment.