Comparison of Precise Time Transfer With Usage of Multi-Channel GPS CV Receivers and Optical Fibers Over Distances of About 3 Kilometers

A. Czubla, J. Konopka, M. Górnik, W. Adamowicz, J. Strus, T. Pawszak, J. Romsicki, M. Lipinski, P. Krehlik, L. Sliwczynski, A. Wolczko

Abstract:	In this paper, the precise time distribution with usage of optical fiber is considered. Special 1 pps electronic-optic and optic-electronic converters developed by the AGH University of Science and Technology (AGH, Krakow) were examined in different configurations in order to verify their usefulness for time transfer. The measurements were performed using real-world fiber between the Central Office of Measures (GUM, Warsaw) and Polish Telecom (Warsaw) over a distance of about 3 km. Results obtained by direct comparison of 1 pps signals transmitted by these fibers were compared with results obtained from the usage of TTS-2 systems with multi-channel GPS-CV receivers and local direct comparisons. Presented results are satisfactory and allow consideration of the possibility of long-distance direct comparisons with optical fibers in time transfer, taking also into account two-directional time transfer. We share some Polish experience in this field.
Published in:	Proceedings of the 38th Annual Precise Time and Time Interval Systems and Applications Meeting December 7 - 9, 2006 Hyatt Regency Reston Town Center Reston, Virginia
Pages:	337 - 346
Cite this article:	Czubla, A., Konopka, J., Górnik, M., Adamowicz, W., Strus, J., Pawszak, T., Romsicki, J., Lipinski, M., Krehlik, P., Sliwczynski, L., Wolczko, A., "Comparison of Precise Time Transfer With Usage of Multi-Channel GPS CV Receivers and Optical Fibers Over Distances of About 3 Kilometers," Proceedings of the 38th Annual Precise Time and Time Interval Systems and Applications Meeting, Reston, Virginia, December 2006, pp. 337-346.
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