Soft-error hierarchical evaluation algorithm of fault vulnerabilities based on sensitive attributes of single event effect

To mitigate the soft-error effects for designing digital signal processing systems, a hierarchical evaluation algorithm is proposed in this paper, which is used to estimate the latent fault vulnerabilities based on the analysis of soft-error sensitive attributes. In this algorithm, the evaluated scales of sensitive attributes are devised for soft-error vulnerability factors of function modules. And then the vulnerable evaluation model of hierarchical intervals is conceived to calculate the confidence of function modules based on the gray system. Finally, the simulation results prove this model effective so as to guide soft-error protection design of digital signal processing systems.