Maintaining, Minimizing, and Recovering Machine Language Program through SEU in On-Board Computer
نویسندگان
چکیده
This paper explores the feasibility of Tierra-based OBC that evolves programs through a bit inversion caused by Single-Event Upset. In particular, Tierra-based OBC is applied to the evolution of the PIC assembly programs. Additionally, this paper proposes a new method that can reliably recover the broken program to the correct one. Intensive experiments reveal that (1) Tierra-based OBC cannot only maintain the PIC machine language programs, but also can minimize the program size and the execution step of the PIC machine language program through SEU, (2) Tierra-based OBC with the proposed recover method can maintain and evolve the PIC assembly program in high SEU rate in comparison with onewithout the recover crossover, and (3) even if all of the correct PIC programs are broken from a memory, Tierra-based OBC with the proposed recover method can recover the correct programs by modifying the broken programs.
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