To find out reasons of anomalies of Geosynchronous Earth Orbit (GEO)satellites and to improve the reli-ability of the satellites,this paper introduces the mechanism of earth radiation belts and energetic particles and dis-cusses the adverse space environment for GEO satellites.Then,based on the monthly space environment data from the Chinese Academy of Sciences for Space Environment Prediction Center (SEPC)and National Satellite Meteoro-logical Center (NSMC),combined with the fault data from a satellite and statistical analysis,the authors come up with the conclusion that high energy electrons in the earth radiation belts is a major cause of faults of GEO satellites.Next,high energy electron is discussed prediction technology based on theoretical analysis,conventional prediction and special prediction.To enhance the accuracy of satellite fault prediction and the ability of space situa-tion awareness,and to reduce risks in long-term management and personnel pressure,it's necessary to strengthen realtime prediction of high energy electrons for GEO satellites.
high energy electronsGeosynchronous Earth Orbit (GEO)satellitesatellite anomalyearth radiation beltrealtime prediction