Patching The F-35’s Data Fusion Gap
Software patch designed to fix snag in ship-to-ship F-35 data ‘fusion’
Mar 20, 2015 Amy Butler and Guy Norris Aviation Week & Space Technology
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Late last year, U.S. Air Force Lt. Gen. Christopher Bogdan, the F-35 program executive officer, said the latest software challenge was to create an accurate “fused” picture across multiship formations.
“Ideally with fusion working at the 100% level, each F-35 has its picture from its own sensors and shares that picture over the data links—all the wingmen in that link also have their own-ship sensor picture as well as the shared info,” says one program official. “Fusion should correlate what wingmen are seeing to what each own-ship sees so that there is one and only one symbol on each airplane’s [display] for each target out there.”
That is the ideal. Test pilots have reported problems when targets on the display have more than one symbol—a sign the system has not “fused” the inputs on that particular target. Or in some cases, not all wingmen are seeing everything the other pilots in their formation are viewing on the displays.
This latest patch—called the “engineering test build” or ETB by testers—is not a full software release. It is akin to an update one might implement on a mobile telephone and is geared specifically to address multiship fusion shortcomings. It was decided among the test team and JPO to move forward with it in parallel with work to certify the 2B software with which the U.S. Marine Corps plans to declare F-35B initial operational capability (IOC) in July.
...the test fleet is working with the 2B, 3i and 3F software packages at varying levels. This is possible, in part, because of the infusion of five mission systems aircraft—some pulled or on loan from other locations and missions. These were added when the program was restructured in 2011 to mitigate risk in the software work delaying fielding. Originally, the team planned for a single mission systems jet.
Earlier in the program, officials assumed the bulk of mission system testing would take place in ground-based laboratories or in the Combined Avionics Testbed, a flying Boeing 737 modified with an F-35 radar, sensors and leading edges, Cregier says.
Thus far, the F-35 is about 60% through development, which is slated to finish in 2017.
http://aviationweek.com/defense/patching-f-35-s-data-fusion-gap