Research on Improvement of Time Synchronization Protocol in Telemetry Network System (TmNS)

The standard Telemetry Network System(TmNS) has been officially incorporated into the IRIG 106–17 standard developed by the Range Instrument Group IRIG, a subsidiary of the RCC, in 2017 and has been gradually improved. TmNS brings new capabilities to the traditional telemetry system and represents the development direction of the next generation telemetry system. Time synchronization is the key technology of TmNS, which is the basis of wireless network connection between multiple test objects and multiple ground stations. In order to adapt to the situation of high packet loss rate of wireless link and high requirement of time synchronization accuracy, an improved time synchronization protocol algorithm is proposed and evaluated by simulation.