Based on the onboard clock synchronization triple modular redundancy system

The present invention discloses a triple modular redundancy spaceborne system, comprising: a tri-mode configuration with a microprocessor module, a clock synchronization module redundancy decision module, the mode management module, the core technology is clock synchronization. Clock synchronization module can be divided into synchronous starting unit and loading the whole high-precision clock correction module is implemented by FPGA multilevel cell count supervisor microprocessor operating state and give non-synchronization offset, and by adjusting the three micro-module isomorphism input frequency of the processor module and a retention time in the state that the synchronous operation of three. The system is mainly applied to the skin of onboard computer systems, synchronization accuracy of up to 10 nanoseconds, versatility, can improve the reliability of the onboard computer system.