ISSS Influences
ISSS was only one part of AAS
Notes on Design of ISSS
Many components in common
Interfaces to: radio systems, flight-plan DB, each other
Common quality requirements for availability, reliability …
So ISSS was influenced by requirements for all of AAS
History
ISSS real system, designed, most of code developed
Not deployed, scaled back to more economical, more
staged solution (budget cuts)
Outside Audit – the architecture and design were analyzed by an
independent audit team that judged “satisfies requirements.”
The system deployed borrowed heavily from ISSS
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