Preliminary result of time scale comparison uncertainty by means of the computer controlled A-724M-02 GLONASS receiver

Summary form only given. A-724M-01 type GLONASS receivers have been widely used for time-scale comparison of remote clocks inside and outside Russia since 1989. Up until now they have operated under manual control. That is why it is too difficult to realise actual “common view” mode of operation and to get completely the same data acquisition, short-term processing and output data format at each clock location site. Investigations started in 1995 on the A-724-02 type GLONASS receiver. This type of receiver differs slightly from previous one by ROM unit and some hardware changes which permit one to get directly satellite-local time scale differences without an additional time interval meter. The most striking difference is availability of computer control for this receiver. The ensemble of A-724-02 type GLONASS receivers was investigated and results are presented in common-view mode