Time and frequency transfer with a microwave link in the ACES/PHARAO mission

Understand

The Atomic Clocks Ensemble in Space (ACES/PHARAO mission), which will be installed on board the International Space Station (ISS), uses a dedicated two-way Micro-Wave Link (MWL) in order to compare the timescale generated on board with those provided by many ground stations disseminated on the Earth.

• Phase accuracy and stability of this long range link will have a key role in the success of the ACES/PHARAO experiment.
• SYRTE laboratory is heavily involved in the design and development of the data processing software : from theoretical modelling and numerical simulations to the development of a software prototype.
• Our team is working on a wide range of problems that need to be solved in order to achieve high accuracy in (almost) real time.