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A Real Time EDAC System for Applications Onboard Earth Observation Small Satellites

机译:实时EDAC系统,用于车载地球观测小型卫星

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摘要

Onboard error detection and correction (EDAC) devices aim to secure data transmitted between the central processing unit (CPU) of a satellite onboard computer (OBC) and its local memory. A follow-up is presented here of some low-complexity EDAC techniques for application in random access memories (RAMs) onboard the Algerian microsatellite Alsat-1. The application of a double-bit EDAC method is described and implemented in field programmable gate array (FPGA) technology. The performance of the implemented EDAC method is measured and compared with three different EDAC strategies, using the same FPGA technology. A statistical analysis of single-event upset (SEU) and multiple-bit upset (MBU) activity in commercial memories onboard Alsat-1 is given. A new architecture of an onboard EDAC device for future Earth observation small satellite missions in low Earth orbits (LEO) is described.
机译:机载错误检测和纠正(EDAC)设备旨在保护在卫星机载计算机(OBC)的中央处理单元(CPU)和其本地内存之间传输的数据的安全。本文介绍了一些低复杂度的EDAC技术,这些技术将用于阿尔及利亚微卫星Alsat-1的随机存取存储器(RAM)中。在现场可编程门阵列(FPGA)技术中描述和实现了双位EDAC方法的应用。使用相同的FPGA技术,对实施的EDAC方法的性能进行测量,并与三种不同的EDAC策略进行比较。给出了Alsat-1机载商业存储器中单事件翻转(SEU)和多位翻转(MBU)活动的统计分析。描述了一种车载EDAC设备的新架构,该架构可用于未来在低地球轨道(LEO)进行的地球观测小型卫星任务。

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