Research of Telemetry Communication Technology Based on TTE Time Triggered Ethernet

Abstract

This paper first introduces the time synchronization, time triggering, redundant communication and other characteristics of TTE time triggered Ethernet, and then presents the telemetry communication architecture, system synchronization capability and system synchronization characteristics of the traditional telemetry system, as well as the shortcomings of the traditional telemetry system. The telemetry system is proposed based on TTE time triggered Ethernet, which not only has the characteristics of time synchronization, time triggering, high-speed transmission and double redundancy of the TTE network, but also is compatible with the traditional telemetry system. The "two-level data integration" is adopted to solve the problems of incomplete telemetry frame data and ground demodulation lock loss that may be encountered when the telemetry system applies TTE time triggered Ethernet, and the utilization rate of telemetry bandwidth is 99%, which is equivalent to the effective telemetry bandwidth of traditional telemetry systems. After TTE time triggered Ethernet is applied to the telemetry system, the ground software processing needs data processing to recover telemetry data step by step to ensure compatibility with traditional telemetry systems.