Simulation of the clock framework of Gaia
  Gaia will perform astrometric measurements with an unprecedented resolution. Consequently, the electronics of the Astro instrument must time tag every measurement with a precision of a few nanoseconds. Hence, it requires a high stability clock signal, for which a Rb-type spacecraft master clock has been baselined. The distribution of its signal and the generation of clock subproducts must maintain these high accuracy requirements. We have developed a software application to simulate generic clock frameworks. The most critical clock structures for Gaia have also been identified, and its master clock has been parameterised. 
Javier Castaneda (1 and 2), Jose P. Gordo (1 and 2), Jordi Portell (1   and 2), Enrique Garcia-Berro (1 and 2), and Xavier L...