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引言微处理器被大量用于当今航天器上,而且将来会更广泛。其应用已经扩展到航天器的主要分系统和有效载荷及科学实验。要用在航天器上的微处理器应在空间环境下长时间可靠地工作(直至10年)。空间辐射环境限制更大:累积剂量(由于捕获电子影响)和单粒子翻转/锁定(由于宇宙射线和质子的影响)。随着已用于航天器上的微处理器的逐渐过时,80年代末,欧洲决定着手开发一种高性能空间用的抗辐射微处理器。这样一种微处理器不受出口许可证的限制(与美国项目
Introduction Microprocessors are used in large quantities on today’s spacecraft and will be more extensive in the future. Its applications have been extended to include spacecraft main subsystems and payloads as well as scientific experiments. Microprocessors to be used on spacecraft should work reliably for long periods of time in space environments (up to 10 years). Spatial radiative environment is more restrictive: cumulative dose (due to capture electron effects) and single particle rollover / lock (due to the effects of cosmic rays and protons). With the gradual obsolescence of microprocessors that have been used in spacecraft, in the late 1980s Europe decided to embark on a radiation-resistant microprocessor for high-performance space. Such a microprocessor is not subject to export licensing restrictions (with the U.S. project