Calibration of the TWSTFT link between OCA and OP using a GPS link calibration

Three independent time transfer techniques are in operation in Observatoire de la Côte d´Azur (OCA): GPS, TWSTFT and T2L2. In Autumn 2013, a GPS receiver relative calibration campaign has been carried out. The result of this campaign, primarily intended to compare GPS with T2L2, have allowed the calibration of the TWSTFT link between OCA and OP. We computed for OCA the value of CALR = 7111.9 ns, with an uncertainty u = 2.8 ns at k = 2. From this calibration we caracterise the others links with the triangle closure technique.