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The Apache Arrowhead (also Modernized Target Acquisition and Designation Sight/Pilot Night Vision Sensor or M-TADS/PNVS), is an integrated targeting and night vision system developed by Lockheed Martin for the Boeing AH-64 Apache attack helicopter. It uses second-generation long-wave Forward looking infrared (FLIR) sensors with three fields of view, a charge-coupled device TV camera, dual field of view pilotage FLIR, electronic zoom, target tracker and auto-boresight. It is the second generation of the Target Acquisition and Designation Sights, Pilot Night Vision System (TADS/PNVS) first fielded on Apaches in 1983. ==Development== Lockheed Martin signed the original TADS/PNVS production contract on 30 April 1982, and the first TADS/PNVS system was fielded in 1983. The Boeing Company and Lockheed Martin agreed to initiate the incorporation of new technology into the Arrowhead sensor system during July 2001. The heart of the project is a large-format staring array mid-wave (MW) forward-looking infrared (FLIR) sensor which uses the staring mid-wave integrated detector/cooler assembly (IDCA) used in Lockheed Martin's Sniper Advanced Targeting Pod. The upgrade is designed to complement the excellent obscurant penetration of the existing long-wave (LW) sensor with a longer-range, smaller-field-of-view MW sensor providing the Apache aircrew with enhanced electro-optical targeting performance in all conditions. The new MW electro-optical system can identify targets at greater ranges than the long-wave system.〔("Lockheed Martin, Boeing To Enhance New-Generation/Targeting Night-Vision Suite For Apache Longbow" ). (Press Release) 27 July 2001. Retrieved 18 July 2013〕 The first Arrowhead production contract was awarded 11 November 2003. Lockheed Martin rolled out the first Arrowhead system to the U.S. Army in May 2005, and completed integration on the first Apache helicopters in June 2005.〔("Lockheed Martin Awarded $385.6 Million Arrowhead Production Contract" ). (Press Release) 26 June 2006. Retrieved 18 July 2013.〕 Arrowhead extends optical targeting ranges and reliability by a factor of two, while also significantly reducing maintenance costs. Quick-access “remove-and-replace” modules are designed to reduce maintenance and save nearly $1 billion in Army operation and support costs over the 20-year life of the Arrowhead system.〔("Lockheed Martin Delivers First Eight Arrowhead Systems to U.S. Army" ). (Press Release) 14 September 2005. Retrieved 18 July 2013.〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Apache Arrowhead」の詳細全文を読む スポンサード リンク
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