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The aircraft has an integrated avionics system where through sensor fusion, data from all onboard sensor systems as well as off-board inputs are filtered and processed into a combined tactical picture, thus enhancing the pilot's situational awareness and reducing workload. Key mission systems include Sanders/General Electric AN/ALR-94 electronic warfare system, Martin Marietta AN/AAR-56 infrared and ultraviolet Missile Launch Detector (MLD), Westinghouse/ Texas Instruments AN/APG-77 active electronically scanned array (AESA) radar, TRW Communication/Navigation/Identification (CNI) suite, and long range advanced IRST currently being tested. [100] The F-22's baseline software has some 1.7million lines of code, the majority involving the mission systems such as processing radar data. [139] The integrated nature of the avionics, as well as the use of Ada, [N 11] has made the development and testing of upgrades challenging. To enable more rapid upgrades, the avionics suite added an open mission systems (OMS) processor, as well as an open-source Kubernetes platform called the Open Systems Enclave (OSE) to enable the use of containerized software from third-party vendors. [94] [141]
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Majumdar, Dave (3 May 2012). "USAF receives last F-22 Raptor". FlightGlobal. Archived from the original on 28 May 2014 . Retrieved 9 June 2014. Following IOC and large-scale exercises, the F-22 flew its first homeland defense mission in January 2007. In November 2007, F-22s of 90th Fighter Squadron at Elmendorf AFB, Alaska, performed their first North American Aerospace Defense Command (NORAD) interception of two Russian Tu-95MS bombers. [198] Since then, F-22s have also escorted probing Tu-160 bombers. [199] Hoffman, Michael (1 August 2012), "Air Force Confident F-22 Oxygen Riddle Solved", Military, archived from the original on 30 March 2019 , retrieved 28 April 2019 Largest part in printing, size = X 93mm, Y 130mm, Z 132mm, After full assembly size= X 194mm, Y 263mm, Z 73mmMajumdar, Dave (30 May 2011). "F-22 Getting New Brain". Defense News. Archived from the original on 29 July 2012 . Retrieved 30 October 2013.