Sagnac Effect and Diurnal Correction on Two-Way Satellite Time Transfer

Author

Tseng, Wen-Hung ; Feng, Kai-Ming ; Lin, Shinn-Yan ; Lin, Huang-Tien ; Huang, Yi-Jiun ; Liao, Chia-Shu

Author_Institution

Telecommun. Labs., Chunghwa Telecom Co., Ltd., Taoyuan, Taiwan

Volume

60

Issue

7

fYear

2011

fDate

7/1/2011 12:00:00 AM

Firstpage

2298

Lastpage

2303

Abstract

Precision of two-way satellite time and frequency transfer (TWSTFT) highly depends on the residual nonreciprocity delays; one of them is caused by the Sagnac effect. In this paper, we employ the satellite ephemeris data to compute the precise Sagnac effect and discuss the possible additive effect related to the Sagnac effect. We also describe a method to calculate the diurnal correction based on the time derivative of the Sagnac effect. Through the analysis of the link between the National Institute of Information and Communications Technology in Japan and the Telecommunication Laboratories in Taiwan, we demonstrate that the correction was useful to improve the TWSTFT data. The time deviation at an 8-h averaging time is reduced from 346 to 156 ps after the correction.

Keywords

Sagnac interferometers; satellite communication; Japan; National Institute of Information and Communications Technology; Sagnac effect; Taiwan; Telecommunication Laboratories; diurnal correction; residual nonreciprocity delays; satellite ephemeris data; time 346 ps to 156 ps; time 8 h; two-way satellite frequency transfer; two-way satellite time transfer; Asia; Delay; Earth; Laboratories; Sagnac interferometers; Satellites; Semiconductor device measurement; Doppler measurements; relativistic effects; satellite navigation systems; satellite tracking; time measurement;

fLanguage

English

Journal_Title

Instrumentation and Measurement, IEEE Transactions on

Publisher

ieee

ISSN

0018-9456

Type

jour

DOI

10.1109/TIM.2010.2095542

Filename

5672600