which are mounted to the Columbus space lab, the science lab of the ESA for the international space station (ISS). ACES is used to test a new generation of atomic clocks under the conditions of microgravity.
It enables to get a more accurate global time determination (e.g. for GNSS, in particular Galileo) and to evaluate the theory of relativity. For experiments with ACES a number of ground stations are planned, which themselves operate reference clocks of different designs. (Source: de.wikipedia.org) For these ground stations, a.o. in Brazil, Australia and China, elnic built and successfully implemented these customized systems .
