The Fault-Tolerant Design in Space Information Processing System Based on COTS

In order to make Space Information Processing System (SIPS) based on Commercial-Off-The-Shelf (COTS) have a much stronger ability of radiation resistance in space, this paper presents multilevel fault-tolerant technique based on FPGA and Single Event Latch-up (SEL) resistance protection circuit. The multilevel fault-tolerant technique includes the dual fault-tolerant design on system level, the redundancy design of memory on module level and the fault-tolerant design of FPGA on chip level. By reliability analysis and experimentation, it can be concluded that the reliability of SIPS has been greatly increased by making use of fault-tolerant design. Moreover, this fault-tolerant design has been implemented successfully and run well.