Speaker
Mr
Guillaume Veran
(Thales Alenia Space - France)
Description
The migration of spacecraft functions from hardware to software together with a higher centralization is one of the current ways to reduce the cost of spacecraft avionics. This requires to manage mixed criticality software in the main platform computer. The integration of a star tracker software (MHSTR SW) in Iridium Next platform software was a major step in this direction for TAS-F.
This presentation will first describe this integration, in particular the MHSTR SW constraints (risks, timing, metrics..), the management of the interfaces between the MHSTR SW and the OBSW and the integration and V&V strategy. Then the modifications implemented on TAS internal RTOS (OSTRALES) to offer a first level of time and space partitioning will be detailed. Finally the failure management and associated FDIR strategy for the partitioned MHSTR SW will be presented.
After this industrial return of experience, the discussion will address further challenges and perspectives in the field of “mixed criticality” software.
