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International Journal of Navigation and Observation
Volume 2017 (2017), Article ID 9176174, 4 pages
Research Article

Fast Comparison of High-Precision Time Scales Using GNSS Receivers

Department of Measurement, Faculty of Electrical Engineering, Czech Technical University in Prague, Technicka 2, Prague, Czech Republic

Correspondence should be addressed to Vojtech Vigner

Received 19 June 2017; Accepted 8 August 2017; Published 24 October 2017

Academic Editor: Gonzalo Seco-Granados

Copyright © 2017 Vojtech Vigner and Jaroslav Roztocil. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Comparison of high-performance time scales generated by atomic clocks in laboratories of time and frequency metrology is usually performed by means of the Common View method. Laboratories are equipped with specialized GNSS receivers which measure the difference between a local time scale and a time scale of the selected satellite. Every receiver generates log files in CGGTTS data format to record measured differences. In order to calculate time differences recorded by two receivers, it is necessary to obtain these logs from both receivers and process them. This paper deals with automation and speeding up of these processes.