翻訳と辞書 Words near each other ・ Passage (Willis novel) ・ Passage Beds ・ Passage Brady ・ Passage Choiseul ・ Passage Creek ・ Passage de l'Argue ・ Passage de Venus ・ Passage des Panoramas ・ Passage development (Egypt) ・ Passage du Fromveur ・ Passage du Gois ・ Passage du Havre ・ Passage du milieu ・ Pass (ice hockey) ・ Pass (military) ・ Pass (spaceflight) ・ Pass a Loutre ・ Pass at Me ・ Pass away ・ Pass by catastrophe ・ Pass Catcher ・ Pass Cavallo (Texas) ・ Pass Christian Light ・ Pass Christian School District ・ Pass Christian, Mississippi ・ Pass Creek ・ Pass Creek (British Columbia) ・ Pass Creek Snowshoe Cabin ・ Pass Creek, British Columbia ・ Pass Dat 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 Pass (spaceflight) ： ウィキペディア英語版 Pass (spaceflight) A pass, in spaceflight and satellite communications, is the period in which a satellite or other spacecraft is visible above the local horizon, and therefore available for radio communication with a particular ground station or satellite receiver (or, in some cases, for visual observation). The beginning of a pass is termed ''acquisition of signal''; the end of a pass is termed ''loss of signal''.〔 The point at which the spacecraft comes closest to the ground observer is the ''time of closest approach''.〔 The timing and duration of passes depends on the characteristics of the orbit a satellite occupies, as well as the topography and any occulting objects at the ground location.〔 An observer directly on the ground track of the satellite will experience the greatest pass duration.〔 Path loss〔 and Doppler shifting〔 are greatest toward the start and end of a pass. ==Coverage== Satellites in geosynchronous orbit may be continuously visible from a single ground station, whereas satellites in low Earth orbit only offer short-duration passes.〔 Satellite constellations, such as those of satellite navigation systems, may be designed so that a subset of the constellation is always visible from any point on the Earth, providing continuous coverage.〔 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「Pass (spaceflight)」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.