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Session B6: PNT Open Systems Architecture 1

Open System Architecture
David Selim, Honeywell Engineering & Technology
Location: Ballroom C
Alternate Number 1

Embedded GPS/INS Modernized (EGI-M) is the next generation of aircraft navigation system incorporating the United States Air Force’s (USAF) new modernized secure airborne receiver along with many new innovations to improve the resiliency and extensibility of the navigation solution. Underpinning these enhancements includes the incorporation of an open architecture enabling Future Airborne Capability Environment (FACE) application hosting and Mission Open Systems Architecture (MOSA) interface support meeting the EGI-179 Interface Support (IS) specification which allows the solution to accelerate integration of new Alternative Navigation functions and future requirements. To enable enhancements in this environment, Honeywell has isolated key safety critical features via software partitioning and application interfaces to separate the core EGI safety critical functions operation from the rapidly advancing mission critical features such as alternative navigation and integrity improvements. Combined into a single system, Honeywell’s partitioned approach enables the EGI safety critical navigation elements to retain their Military Standard Order (MSO) C145b certification (DO-178C and DO-254 Design Assurance Level [DAL] A) while allowing parallel mission critical development and integration activities rapidly with quick changes as technology develops. The parallel approach enabled by the segregation of the two capabilities allows for the improvement of the mission operation without impacting the solution’s safety critical designation.



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