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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク X-ray pulsar-based navigation ： ウィキペディア英語版 X-ray pulsar-based navigation X-ray pulsar-based navigation and timing (XNAV) is a theoretical navigation technique whereby the periodic X-ray signals emitted from pulsars are used to determine the location of a spacecraft in deep space. A spacecraft using XNAV would compare received X-ray signals with a database of known pulsar frequencies and locations. Similar to GPS, this comparison would allow the spacecraft to triangulate its position accurately (±5 km). The advantage of using X-ray signals over radio waves is that X-ray telescopes can be made smaller and lighter.〔(【引用サイトリンク】title=An Interplanetary GPS Using Pulsar Signals )〕 SEXTANT (Station Explorer for X-ray Timing and Navigation Technology) is a NASA-funded project being developed at the Goddard Space Flight Center that will test XNAV on-orbit on board the International Space Station in connection with the NICER project. It is currently planned for October 2016.〔(【引用サイトリンク】title= The Neutron star Interior Composition ExploreR Mission )〕 ==References== 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「X-ray pulsar-based navigation」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.