Abstract:Mitigating the effects of Single Event Upsets (SEU) is critical to ensuring spacecraft safety in low earth orbits. The memory of the Central Communications Unit on Envisat, launched in March 2002 for a nominal life of 5 years, is protected by EDAC ensuring thatany single bit flip identified during memory read instructions is corrected prior to usage by the processing unit. The memory is divided into two blocks (prime and redundant), each consisting of three pages. A memory scrubbing task runs in the background… Show more
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