Time Transfer in Wireless Media for Distant Device Synchronization through UHF Link

Time synchronization is most vital in event management and co-relating time critical real time data. InterRange Instrumentation Group (IRIG) time formats are well established time synchronization format used worldwide. This paper describes two customized techniques which utilizes the IRIG-B time code format. These techniques provide time synchronization to remote devices without any wired connection. In one of the techniques IRIG-B AC signal is Frequency modulated (FM) in particular Ultra High Frequency (UHF) with proper modulation settings and transmitted by a low power amplifier. In other technique, IRIG-B DC signal modulates two sub-carriers to generate a Continuous Wave Frequency Shift Keying (CWFSK) signal, which is further up-converted to the UHF band. A remote receiver down converts and demodulates the signal to baseband domain. The baseband signal is further demodulated and decoded to synchronize the remote devices or sensors.