Comparison of radiation analyses

This paper presents simulation results of radiation analyses performed for GEO (GEosynchronous Orbit) environment. As is well known, Total Ionizing Dose (TID) is one of radiation effects, which causes permanent defects on electronic components, therefore the TID is of particular interest. We first simulate radiation environment and then TIDs on the sensitive electronic component are calculated by considering different scenarios. TID is generally calculated only considering shielding effect. In our case, we particularly investigate effects of the placement in a satellite on the TID. The different scenarios with different shielding materials and thickness are also simulated. The comparison of results is presented.