Abstract
Space environment is harsh, especially because of radiations. These radiations induce cumulative and singular effects that can reduce the overall reliability of a satellite. For low-cost space systems, the use of radiation hardened components is prohibited because of their high cost. Commercial components are preferred but their radiation sensitivity is often unknown. Scientific and commercial space projects require a Radiation Hardness Assurance (RHA) process in order to reduce the risk and ensure a better reliability by providing a study at component level. We propose in this thesis the study and development of RHA methods dedicated and tailored for nanosatelittes.