Feasibility exploration of off-site TT&C Compatibility Test

Through analyze the existing TT&C compatibility test, for the problem of long period and inefficiency, an off-site compatibility test method is proposed. This method installs the off-site compatibility test equipment in both ends of transponder and ground station which are apart. By building the system construction, the model of transmission link is drawn. In addition, based on the jitter of clock signal described in frequency, phase and time domain, the effect of jitter on signal coherence is deduced. It is shown that, the signal coherence won´t be affected when using time and frequency remote calibration and traceability technology and system clocks which have good performance of short term frequency stability. In other words, the off-site TT&C compatibility test is feasibly.