A Method for Identifying Weak Points of Single Event Protection in Spacecraft Systems
An identification method, single particle technology, applied in the direction of instruments, special data processing applications, electrical digital data processing, etc., can solve problems such as the inability to evaluate the consequences and harm of single particles, and the inability to identify weak links in single particle protection, so as to ensure reasonable sexual effect
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[0059] It is known that for a certain satellite, the working life requirement is 10 years (87600 hours), and the number of interruptions caused by single-event soft errors per year is 3 times, and the duration of each allowed single-event soft error is no more than 5 hours. The devices interrupted by the satellite are device S, device D and device R. Device S and device D both use the single event sensitive device FPGA. The single event soft error failure mode, consequence type, system recovery strategy and basic data are shown in the following table.
[0060]
[0061] According to the method proposed by the present invention, the impact of computing device S and device D on the entire star system is shown in the table below.
[0062]
[0063]
[0064] According to the requirements of satellite life and outage indicators, the weak point threshold of satellite single event soft error protection is
[0065]
[0066] It can be seen from the above table that among the...
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