Frequency transfer using GPS carrier phases: influence of temperature variations near the receiver.

We have used carrier phase data from geodetic GPS receivers, driven by atomic clocks, and belonging to the IGS network, to demonstrate the capabilities of the GPS carrier phases for frequency transfer. On a regional baseline, we obtained frequency stabilities of 2.10(-16) over 4 h through a proper modeling of the tropospheric refraction and by keeping ambient temperature variations under control.