The paper presents several event-driven models for generation of test operation telemetry data of some systems in small satellites. The models, based on the Poisson flow of events and Gaussian distribution of state duration, are showed to give the unsatisfactory simulation quality. The proposed event-driven model with nonstationary probabilities of transitions between states are more suitable for generation of telemetry data and can be used for the development of the algorithms for revealing the predictors of hardware failures.
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