翻訳と辞書 Words near each other ・ Dynamene ・ Dynameter ・ Dynametrix ・ Dynamic (record label) ・ Dynamic accumulator ・ Dynamic Adaptive Streaming over HTTP ・ Dynamic Airlines ・ Dynamic Airways ・ Dynamic Airways Flight 405 ・ Dynamic Albedo of Neutrons ・ Dynamic amplification factor ・ Dynamic Analysis and Replanning Tool ・ Dynamic and formal equivalence ・ Dynamic angiothermography ・ Dynamic antisymmetry ・ Dynamic aperture ・ Dynamic aperture (accelerator physics) ・ Dynamic apnea ・ Dynamic Armor ・ Dynamic array ・ Dynamic assessment ・ Dynamic asset allocation ・ Dynamic balance ・ Dynamic bandwidth allocation ・ Dynamic Bayesian network ・ Dynamic binding ・ Dynamic binding (chemistry) ・ Dynamic braking ・ Dynamic braking (locomotive) ・ Dynamic Business Modeling 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 Dynamic aperture ： ウィキペディア英語版 Dynamic aperture In acoustics, dynamic aperture is analogous to aperture in photography. The arrays in side-scan sonar can be programmed to transmit just a few elements at a time or all the elements at once. The more elements transmitting, the narrower the beam and the better the resolution. The ratio of the imaging depth to the aperture size is known as the F-number. Dynamic aperture is keeping this number constant by growing the aperture with the imaging depth until the physical aperture cannot be increased. A modern medical ultrasound machine has a typical F-number of 0.5. Side Scan Sonar systems produce images by forming angular “beams”. Beam width is determined by length of the sonar array, narrower beams resolve finer detail. Longer arrays with narrower beams provide finer spatial resolution. 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「Dynamic aperture」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.