Propagation Time Correction on Earth's Orbital Motion for Two-way Satellite Time and Frequency Transfer

Wen-Hung Tseng

Peer Reviewed

Abstract:	This paper presents a propagation time correction for considering the effect of the Earth's orbital motion. For a geostationary satellite based two-way satellite time and frequency transfer (TWSTFT), the calculated time delay corrections for individual up or down paths have daily cycles with amplitude of about 1.4 ns, which have the same order with the amplitude of TWSTFT diurnals for TL-PTB link via IS-4 satellite. The second-order terms (e.g. geometric propagation time and second-order Doppler effect) exist in individual one-way paths, and may not exactly be cancelled out in the two-way link. Accordingly, a link correction is proposed for effectively reducing the diurnals. The evaluation and application to TWSTFT observations are discussed.
Published in:	Proceedings of the ION 2017 Pacific PNT Meeting May 1 - 4, 2017 Marriott Waikiki Beach Resort & Spa Honolulu, Hawaii
Pages:	978 - 987
Cite this article:	Tseng, Wen-Hung, "Propagation Time Correction on Earth's Orbital Motion for Two-way Satellite Time and Frequency Transfer," Proceedings of the ION 2017 Pacific PNT Meeting, Honolulu, Hawaii, May 2017, pp. 978-987. https://doi.org/10.33012/2017.15056
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