Performance Analysis on a Traceable Precise Satellite Timing

Polluted by the noise of observation, precision satellite timing based on pseudoranges can merely reach tens nanoseconds. Considering sharply increasing demand high-precision in many fields, a traceable precise system has been proposed, which means having connection with UTC (Coordinated Universal Time). We introduce principle PPP (Precise Point Positioning) and conduct experiment form zero baseline, long very simultaneously, CV (Common View) AV (All solution are used for comparison. Finally, performance evaluated from aspects stability. The results show, when Rubidium module is frequency source user terminal, 1 PPS accuracy 904 km achieved this method 0.32 ns, stability achieve about 9.51e-13, 5.58e-13 1.37e-13 at averaging time 100 s, 1000 s 10000 s. bias approximate 2 ns. Besides, variation temperature will affect results. Compared to pseudorange solution, improvement short term more obvious than that