The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Precise timing is an inherent part of Global Navigation Satellite Systems (GNSS) like the Global Positioning System (GPS), Glonass and the future Galileo. GPS has been providing a UTC (Coordinated Universal Time) time distribution service since its inception. This paper will outline present performance of GPS UTC time distribution and show projections for Galileo and the planned modernized GPS UTC...
In this paper, a process of preparing and reviewing calibration and measurement capabilities of European time and frequency laboratories is described. Detailed review procedures are described. All major events are given which determined both the timing and content of this international project.
The GPS has provided a model for precise time dissemination in the environment of the Earth. In the future, principles analogous to those now used in the GPS will need to be applied to space missions beyond the Earth. This paper presents some of the theoretical and technical issues that will be important for time synchronization among atomic clocks on Earth, on the surface of Mars, and on satellites...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.