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SEU Mitigation Strategy and Analysis on the Mass Memory of the STSAT-3  

Kwak, Seong-Woo (Dept. of EE, Keimyung University)
Publication Information
Journal of the Institute of Electronics Engineers of Korea SC / v.45, no.4, 2008 , pp. 35-41 More about this Journal
Abstract
When memory devices are exposed to a space environment. they suffer various effects such as SEU(Single Event Upset). For these reasons, memory systems for space applications are generally equipped with error detection and correction(EDAC) logics against SEUs. In this paper, the error detection and correction strategy in the Mass Memory Unit(MMU) of the STSAT-3 is discussed. The probability equation of un-recoverable SEUs in the mass memory system is derived when the whole memory is encoded and decoded by the RS(10,8) Reed-Solomon code. Also the probability value is analyzed for various occurrence rates of SEUs which the STSAT-3 possibly suffers. The analyzed results can be used to determine the period of scrubbing the whole memory, which is one of the important parameters in the design of the MMU.
Keywords
Mass Memory Unit; STSAT-3; Single Event Upset; Reed-solomon Code; Probability Analysis;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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