大学物理 ›› 2017, Vol. 36 ›› Issue (2): 55-57.doi: 10.16854 /j.cnki.1000-0712.2017.02.014

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相对论效应对GPS 的影响

钟季康1,胡盘新2   

  1. 1. 同济大学物理科学与工程学院,上海200092; 2. 上海交通大学物理与天文系,上海200240
  • 收稿日期:2015-12-06 修回日期:2016-05-26 出版日期:2017-02-20 发布日期:2017-02-20
  • 作者简介:钟季康( 1944—) ,男,同济大学教授,长期从事大学物理教学及生物医学信号处理研究工作.
  • 基金资助:
     

The effect of relativity on GPS

ZHONG Ji-kang1,HU Pan-xin2   

  1. 1. School of Physical Sciences and Engineering,Tongji University ,Shanghai 200092,China;   2. Department of Physics and Astronomy,Jiaotong University,Shanghai 200240,China
  • Received:2015-12-06 Revised:2016-05-26 Online:2017-02-20 Published:2017-02-20
  • Supported by:
     

摘要: 全球定位系统( GPS) 对时钟的精度提出了很高的要求. 由于GPS 卫星的速度和高度,本文从狭义相对论和广义相 对论两方面论述了无论是运动时钟变慢,还是引力场中高处时钟加快的效应都将对GPS 系统时钟的精度产生不可忽视的影响.这是大学物理课程讲述相对论的一个极好的例子.

关键词: 全球定位系统, 时钟, 狭义相对论, 广义相对论

Abstract: Global positioning system ( GPS) on the accuracy of the clock makes a very high demand. Since the speed and the altitude of the satellite,this paper shows that both effects from the special relativity which make motion clock slow and from the general theory of relativity which makes the clock at higher place in a gravitational field fast be large enough,thus the influence of relativity to accuracy of satellite clocks can not be ignored. This is a very good example when we talk about the application of relativity in college physics course.

Key words: GPS, clock, special relativity, general theory of relativity

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