Time Transfer using the PPP Method Based on Measurements of GLONASS User Navigation Equipment

The article deals with using the PPP (Precise Point Positioning) method for highly accurate time and frequency transfer in reference generators based on measurements of the GLONASS navigation spacecraft. We supply the results of experimental investigations of reference generator time transfer via the PPP method, which reveal a systematic bias in the generator frequency difference computed from the time scale differences obtained. We show that desynchronization of code and phase measurements explains this bias. We note that rebooting the receiver may lead to changes in code and phase desynchronization. We present time transfer results obtained via the differential method accounting for integer ambiguity resolution of the GLONASS navigation spacecraft phase measurements

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