Abstract
TWSTFT techniques are employed for time interval measurements of two different atomic clocks or timescales located far apart. There are various methods of time and frequency transfer between timing labs. Among all-time transfer methods, TWSTFT is very precise time transfer method for geographically apart but visible from common GEO satellite stations. In this paper, we have discussed the errors included in the process of TWSTFT and also derived and calculated the mathematical value of the SAGNAC effect delay and the ionospheric delay. Among all the delays, SAGNAC effect delay and the ionospheric delay are considered to be the most complicated in terms of calculation and are responsible for the increased inaccuracy in TWSTFT.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
References
An in-house developed Timescale for NavIC PTF
Hanson DW (1989) The operational use of two-way satellite time and frequency transfer employing pseudorandom noise code. In: 43rd Annual symposium on frequency control, pp 174–178
Sun H, Li Y, Yang H, Ding X (2013) Effect of satellite motion on TWSTFT. ICCNCE-13
Hedgley Jr, DR, Edwards C (1976) An exact transformation from geocentric to geodetic coordinates for non-zero altitude. NASA Technical Report, R-458
. Conversion of geocentric to geodetic latitude—mathworks.com https://www.mathworks.com/help/aeroblks/geocentrictogeodeticlatitude.html
Soler T, Eisemann DW (1994) Determination of look angles to geostationary communication satellite. JSE 120(3):115–116
(08/2015) The operation use of two-way satellite time and frequency transfer employing pseudorandom noise codes. Recommendation ITU-R TF. 1153–4, 2015
Author information
Authors and Affiliations
Corresponding authors
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2021 The Editor(s) (if applicable) and The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.
About this paper
Cite this paper
Sharma, V., Prabha, C., Zaheer, M.M. (2021). SAGNAC-Error Calculation in Two-Way Satellite Time and Frequency Transfer. In: Favorskaya, M.N., Mekhilef, S., Pandey, R.K., Singh, N. (eds) Innovations in Electrical and Electronic Engineering. Lecture Notes in Electrical Engineering, vol 661. Springer, Singapore. https://doi.org/10.1007/978-981-15-4692-1_42
Download citation
DOI: https://doi.org/10.1007/978-981-15-4692-1_42
Published:
Publisher Name: Springer, Singapore
Print ISBN: 978-981-15-4691-4
Online ISBN: 978-981-15-4692-1
eBook Packages: EnergyEnergy (R0)