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In this paper, the details of the linear chirped femtosecond laser pulse used for timing synchronization when transferring in single mode fiber(SMF) and dispersion compensation fiber(DCF) are analyzed based on a numerical simulation. The broadening of the 416fs laser pulse used for timing synchronization by 9.7m DCF and then the compression by 33m SMF can be observed in the experiment. Based on the...
We describe the idea of a high precise time-synchronization based on ultra-short pulse using auto-correlation method. The local pulse train is generated by a femtosecond laser system tightly locked to a local atomic clock. Then the optical pulse train is distributed to remote location. The backward propagating pulses and local pulses are combined and applied to the second-harmonic generation (SHG)...
With the development of BeiDou(BD) Navigation Satellite system, BD can be another choice for remote precise time and frequency transfer. A strict common view test using BD Navigation Satellite System is carried out in this paper. Since there are GEO, IGSO and MEO satellites in BD Navigation Satellite system, common view based on GEO, IGSO and MEO are discussed in this paper separately. Finally, we...
This paper gives a test method of BeiDou timing receiver delay. A BeiDou System simulator and a time interval counter were used in the experiments. During the process, the most important step is to calibrate the delay of the simulator. The uncertainty of this method is analyzed to be less than 1.5ns. Using this method, some typical Chinese commercial timing receivers were tested, and the results are...
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