Beschreibung:
<jats:title>Abstract</jats:title><jats:p>We have written a theoretical description of one-way and two-way satellite time and frequency transfer and developed a model of the micro-wave link in the frame of the ACES/PHARAO mission. This is used to write a data analysis software and a simulation to test it. A very short description of the mission and of the micro-wave link is given here. A detailed description can be found in Delva <jats:italic>et al</jats:italic>., 2012, Proceedings of the EFTF, Gothenburg, Sweden, arXiv:1206.6239.</jats:p>