Archive for October 13th, 2008

Synchronizing clocks

October 13th, 2008 by Álvaro Mozo

Among the products you get from magicGNSS Beta there are satellite and station clock estimations and predictions. By “satellite and station clocks” we mean the offset of these clock as seen by the ODTS with respect to the clock of the station selected as reference clock in the Settings tab, at every measurement epoch.

What synchronisation performances can we obtain with magicGNSS? The comparison of the satellite clock estimations with the IGS ones is typically within 0.15 ns RMS:  this means that magicGNSS is a very powerful means of synchronising remote clocks, provided they are connected to a GNSS receiver!


Dressing up for the GIOVE Workshop

October 13th, 2008 by Ricardo Píriz

Today we are at the GIOVE Workshop in ESTEC, the European Space Agency technology center in Noordwijk, The Netherlands. The experimentation results of GIOVE-A and GIOVE-B, the first two experimental Galileo satellites, are being presented to the media. GIOVE-B carries a Passive Hydrogen Maser (PHM) on board, the most accurate atomic clock ever flown in space. This clock has an awesome stability that allows to predict its evolution within just one nanosecond after one day.

GMV has been involved in the different Galileo test beds since the early stages of the mission. In particular, we had the privilege to observe for the first time the behaviour of GIOVE-B’s PHM clock from ground using our EOSPF (Experimental Orbit and Synchronization Processing Facility), the operational software for GIOVE experimentation developed by GMV for ESA.

To celebrate the GIOVE Workshop and the success of the GIOVE Mission, magicGNSS is wearing a new “dress” today: go to the main web page and you will be able to see a colour map showing the geographical coverage of the 13 GPS+GIOVE dual stations that have been deployed by ESA worldwide.