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空间辐射粒子引起单粒子翻转（ＳＥＵ）率预计的基础是地面粒子加速器模拟试验数据、卫星轨道的粒子辐射环境模型和高能粒子与器件相互作用模型。引起ＳＥＵ的空间辐射粒子包括银河宇宙射线、太阳宇宙射线和地磁俘获粒子。高能粒子通过电离产生多余电子－空穴对引起ＳＥＵ。介绍了计算轨道中ＳＥＵ率的程序ＣＲＥＭＥ。以８０Ｃ３１微控制器为例，根据串列静电加速器地面模拟试验结果，进行了在轨ＳＥＵ率预计。
The projected single event inversion (SEU) rate of spatially radiated particles is expected to be based on simulated data from ground particle accelerators, the particle radiation environment of the satellite orbit, and the model of the interaction between energetic particles and the device. Space radiation particles that cause SEU include galactic cosmic rays, solar cosmic rays and geomagnetic capture particles. High-energy particles produce extra electron-hole pairs by ionization that cause SEU. The program CREME, which calculates the SEU rate in the orbit, is introduced. Taking the 80C31 microcontroller as an example, the on-orbit SEU rate estimation is carried out based on the tandem electrostatic accelerator ground simulation test results.