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During the second half of 2002, the Naval Research Laboratory studied the tactical application of space assets. Relatively new technologies and processes in the areas of microsatellites, affordable and quick-response launch vehicles, and the classified SIPRNET (Secret Internet Protocol Router Network) made tactical use of space assets possible in the relatively near term. The DOD’s Office of Force Transformation (OFT) agreed with the core findings of the study and decided to start an Operationally Responsive Space Initiative consisting of a series of experiments. TacSat-1 is the first experiment in this OFT initiative. The TacSat-1 experiment received go-ahead on May 7, 2003. The TacSat series of experimental spacecraft are designed to allow military commanders on a battlefield to request and obtain imagery and other data from a satellite as it passes overhead. Collected data will be delivered to field commanders in minutes rather than hours or days. All TacSats have been launched on Minotaur rockets.〔 (【引用サイトリンク】 Launch Schedule )〕 These series of spacecraft should not be confused with the Tacomsat program in 1969.〔http://msl.jpl.nasa.gov/QuickLooks/tacsatQL.html〕 TacSats: *TacSat-1 - Cancelled *TacSat-2 - Launched 16 December 2006 *TacSat-3 - Launched 19 May 2009 () *TacSat-4 - Launched 27 September 2011 *TacSat-5 - Conceptual *TacSat-6 - A three-unit CubeSat scheduled for launch in December 2013 ==External links== * http://www.responsivespace.com/ - Conference, yearly, that has content that includes Tacsat * http://www.nrl.navy.mil/content.php?P=04REVIEW207 * http://www.nasa.gov/mission_pages/tacsat-2/main/ 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「Tactical Satellite Program」の詳細全文を読む スポンサード リンク
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