Precise Point Positioning for TAI computation

We discuss the introduction of a new time transfer technique for computing time links for TAI. Precise point positioning uses GPS dual frequency carrier phase and code measurements to compute the link between a local clock and a reference time scale with the precision of the carrier phase and the accuracy of the code. The time link between any two stations can then be computed by simple difference. The paper presents results of link comparisons as well as a general procedure to be implemented in the regular TAI computation and shows that this technique is well adapted to this usage.