Space and Time

Blackboard with physical formulas
Basis and applied research for metrology

INRIM’s commitment is to bring fundamental physics to the service of metrology for developing the primary standards for meter, second and kilogram; on the other hand, INRIM offers the best references to the physics in order to perform accurate measurements, at state of the art level.

The Institute uses the features of quantum physics for developing the standards of time and frequency. It provides the metrological references for the technologies relying on quanta and quantum optics; disseminates to scientific and industrial users the standard of frequency by optical fiber links; develops interferometric techniques for measuring distances over several orders of magnitude:  at the interatomic scale, geodesy, space applications; contributes to the formation of the Coordinated Universal Time; provides the time reference  for “Galileo”, the future European Global Navigation Satellite System (GNSS)

Galileo Timing Research Infrastructure
L'ora ufficiale

The INRIM Galileo Timing Research Infrastructure was developed in the last 15 years to support the design, development, and test of the timing system of the European Galileo navigation system.

It is composed by different measurement and processing systems, which allow the provision to the European Space Agency of daily products for the validation of the Galileo timing performances, and also the development and test of new timing algorithms and measurements.

The Galileo Timing Research Infrastructure currently works as monitoring unit for the Galileo timing system checking the behaviour of the on-board clocks, the Galileo System Time and the timing information transmitted in the Galileo Navigation Message. In addition, such Infrastructure is also used as an “incubator” or “test bed” to support the development of new algorithms, GNSS payload elements, services or potential concepts, and to validate them through end-to-end simulations and demonstrations.

The Galileo Timing Research Infrastructure is supported by several contracts by the European Space Agency, the European GNSS Agency (GSA), the Horizon 2020 program, and the main space industries as Thales Alenia Space.

Contact person: Ilaria Sesia i.sesia(at)

Last modified: 05/07/2019 - 10:44