Fault protection architecture for the command and data subsystem onthe Cassini spacecraft

摘要

Cassini is a NASA/JPL spacecraft that is planned to be launched inn1997 for a 10.7 year mission (6.7 in transit, 4 in orbit) to the planetnSaturn. This paper focuses on one subsystem on the spacecraft, thenCommand and Data Subsystem (CDS). Overviews are presented of the Cassininand CDS avionics and then the internal fault protection architecture fornthe subsystem is described. This description covers fault detections,nerror filtering, event activation rules, and response triggering for thenfollowing key subsystem regions: (1) Command and Data ElectronicsnAssemblies, (2) 1553B Bus and Remote Terminal Communication InterfacenUnits, (3) Remote Engineering Units, and (4) Solid State Recorders