Error Detection and Correction On-Board Nanosatellites Using Hamming Codes

Table 3

Memory errors that observed on Alsat-1 during a 7-year period.

Event upset observation for Alsat-1
System monitored	OBC 386 RAMDISK memory
EDAC code	R-S (256,252)
Memory size	32 Mbytes
Hybrid	SYS84000RKXLI-70 (4M × 8-bit)
Device	Samsung SEC KM684000BLT-5L: 512K × 8-BIT SRAM
Observation period	2510 days November 29, 2002–October 12, 2009
Bits monitored	268435456
No. of single-bit errors	244150 (98.6%)
No. of multiple-bit errors	217 (0.08%)
No. of double-byte errors	2996 (1.21%)
No. of severe errors	230 (0.09%)