Analysis of spacecraft anomalies due to the radiation environment

Various space-environment-induced anomalies are discussed and new tools und er development are demonstrated that are now or soon will be available to t he spacecraft designer to mitigate the effects of the space environment on space systems. Two-dimensional cross correlations between spacecraft anomal ies and trapped particle models provide information on the energy of the pa rticles that cause the anomalies and are also used to evaluate the accuracy of energetic proton models. Results of studies using anomalies and backgro und effects in satellite sensors to evaluate the BPS trapped radiation mode l and an update to it are also presented.