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positioning system : ウィキペディア英語版 | positioning system A positioning system is a mechanism for determining the location of an object in space. Technologies for this task exist ranging from worldwide coverage with meter accuracy to workspace coverage with sub-millimetre accuracy. == Interplanetary systems == Interplanetary-radio communication system not only communicate with spacecraft, but are also used to determine their position. This can be done either using a transponder on board a spacecraft that echoes a radio signal back, or using radar. Orientation information can be obtained using star trackers.
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「positioning system」の詳細全文を読む
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