Intelligent detection and recovery on satellite telemetry loss

Abstract The article takes the high-orbit satellite telemetry system as an example. Firstly, the general system architecture of the satellite telemetry system is summarized. Then, starting from the system design characteristics, the recovery strategy analysis method for satellite in orbit telemetry loss faults is studied. We have established a tree decomposition diagram of telemetry loss fault reason classification and countermeasures, consisting of a three-layer model of fault reason classification, fault root localization, and response and recovery strategy. At the level of fault root localization, specific recovery strategies are formulated based on the classification of telemetry loss fault causes, including satellite software FDIR (Fault Detection, Isolation, and Recovery, FDIR) intelligent autonomous fault detection, diagnosis, and recovery methods. The logical flow of recovery strategies is analyzed for each method. Finally, the development direction of countermeasures for satellite telemetry loss faults is discussed, and it is pointed out that improving the intelligence and autonomy of onboard software is the future development direction. The article provides reference and guidance for the analysis method of in-orbit telemetry loss faults of GEO satellites in this field, and can also be applied to other application fields such as medium/low orbit satellites of different orbit business types, mobile communication constellation networking satellites, etc.