Specification of Mil-Standard 1553 bus protocol and application to EA-6B communications countermeasures
Christensen, Peter Hugh
Lundy, Gilbert M.
Powell, James R.
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A model for the specification and analysis of communication protocols called Systems of Communicating Machines is used to describe and analyze a simplified version of the Mil- Standard 1553 bus protocol. The protocol is used in the EA- 6B aircraft for digital communication between aircraft subsystems. The model uses a combination of finite state machines, variables and predicate action tables in the specification of the Bus Controller and Remote Terminals. The enabling predicates determine when a transition may be taken on the finite state machine and actions alter variable values as transitions occur. Normal, error-free 1553 bus command/ response information transfers are modeled. The 1553 Mil- Standard does not contain an equivalent specification using a formally-defined model. Practical application to the EA-6B Prowler is focused upon the requirements for transparent integration of the AN/ASQ-191 Radio Countermeasures Set into the existing aircraft bus architecture. Transparent integration into the tactical jamming system of the aircraft would make the ASQ-191 receiver and jamming operations an integral part of aircraft operation and employment, and permit integrated pre-mission planning with TEAMS.
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