翻訳と辞書 Words near each other ・ Laser 128 ・ Laser 2 ・ Laser 3000 ・ Laser 4.7 ・ Laser 4.7 World Championships ・ Laser 4000 ・ Laser 5000 ・ Laser 558 ・ Laser ablation ・ Laser ablation electrospray ionization ・ Laser ablation of thyroid nodules ・ Laser ablation synthesis in solution ・ Laser absorption spectrometry ・ Laser accelerometer ・ Laser acronyms ・ Laser airborne depth sounder ・ Laser Airborne Depth Sounder Flight RAN ・ LASER Airlines ・ Laser Arena ・ Laser beam machining ・ Laser beam profiler ・ Laser beam quality ・ Laser beam welding ・ Laser Beam/Kasuka na Kaori ・ Laser Blast ・ Laser blended vision ・ Laser bonding ・ Laser Books ・ Laser Broadcasting ・ Laser broom Dictionary Lists mini英和辞書 mini和英辞書 Webster 1913 Latin-English FOLDOC Wikipedia English ウィキペディア

翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Laser airborne depth sounder ： ウィキペディア英語版 Laser airborne depth sounder Laser airborne depth sounder (LADS) is an aircraft-based hydrographic surveying system used by the Australian Hydrographic Service (AHS).〔Slade, in Oldham, ''100 Years of the Royal Australian Navy'', p. 171〕 The system uses the difference between the sea surface and the sea floor as calculated from the aircraft's altitude to generate hydrographic data.〔 The lack of progress made in surveying Australia's territorial waters, most of which was unsurveyed or relying on Age of Sail-era charts prompted the Royal Australian Navy to seek a method of effectively surveying large areas from the air in the 1970s.〔(【引用サイトリンク】title=LADS II (laser airborne depth sounder) )〕 The Defence Science and Technology Organisation developed the LADS system, with feasibility trials beginning 1977.〔〔 The LADS system is built around a Nd:YAG laser, which emits an infra-red beam at 990 hertz.〔 The beam is frequency doubled to produce a green laser.〔 This is split into two beams, one infra-red, one green, by an optical coupler, with the infra-red beam aimed directly below the aircraft, and the green beam directed across the target area with a scanning mirror.〔 The infra-red laser does not penetrate the water's surface, and its reflected pulse indicates the height of the aircraft above the surface.〔 However, the green laser penetrates to the ocean floor, and the return pulse from the green laser indicates the height of the aircraft from the ocean floor; the difference between the two values is used to calculate the water's depth.〔 The data from the lasers is not processed aboard the aircraft, but instead by a ground support team, with aircraft flight data and global positioning system information used to help generate hydrographic readings.〔 The aircraft makes multiple, overlapping passes of the target area to ensure accurate data is collected.〔 The LADS system is capable of taking 990 soundings per second, with data points positioned apart across a swath up to wide.〔 The system is capable of working with waters up to deep, and can be modified to perform land surveys of areas with an altitude variance less than LADS entered service with the AHS in 1993.〔 The equipment was initially fitted to a Fokker F27 aircraft.〔 In 2010, the system was installed in a De Havilland Dash 8 aircraft.〔 This is operated by the Laser Airborne Depth Sounder Flight of the Royal Australian Navy. ==Citations== 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「Laser airborne depth sounder」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.