On the Relativistic Effect of GPS

• Main Authors: Tsou, Cheng-Hsuan, 鄒政諠
• Other Authors: Wang, He-Sheng
• Format: Others
• Language: zh-TW
• Published: 2018
• Online Access: http://ndltd.ncl.edu.tw/handle/u3pg3h

碩士 === 國立臺灣海洋大學 === 通訊與導航工程學系 === 107 === 　　Global Navigation Satellite System (GNSS) has been widely used in many places. In order to achieve the centimeter-level positioning accuracy, many small errors need to be examined now. In this paper, the influence on GPS observations by the relativistic effect (both the special and the general effects are considered) is discussed. Firstly, the delay caused by Sagnac effect on GPS signal transmission is discussed. Secondly, the relationship between Doppler shift and relativity is studied, including the influence by eccentricity, high-speed satellite movement and light of sight (LOS). The effect of the relativistic Doppler shift on the estimated velocity of the receiver is discussed in this paper. It is shown in the paper that the accuracy of the velocity estimation can be improved, while the relativistic Doppler shift is properly estimated.