Glossary term: 导航
Description: 导航是确定自己在地球或太空中的位置、预定的行进方向以及如何到达目的地的过程。在历史上，太阳和星星在导航中起到了重要作用。最简单的情况，在北半球的晴朗夜晚，可以通过北极星确定北方的位置，并据此选择行进方向；而在南半球，南十字星指向的是南方。在现代导航设备发展之前，“天体导航”是导航的关键方法。导航员会通过测量中午太阳在地平线上的角度来推算自己的纬度，并通过比较当地中午时间（太阳位于天空最高点的时间）与显示格林威治标准时间的时钟，来确定自己的经度。现代导航主要依赖于GPS及类似卫星系统的信号。
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Term and definition status: The original definition of this term in English have been approved by a research astronomer and a teacher The translation of this term and its definition is still awaiting approval
The OAE Multilingual Glossary is a project of the IAU Office of Astronomy for Education (OAE) in collaboration with the IAU Office of Astronomy Outreach (OAO). The terms and definitions were chosen, written and reviewed by a collective effort from the OAE, the OAE Centers and Nodes, the OAE National Astronomy Education Coordinators (NAECs) and other volunteers. You can find a full list of credits here. All glossary terms and their definitions are released under a Creative Commons CC BY-4.0 license and should be credited to "IAU OAE".
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