A device for realizing time synchronization with a time reference station

Abstract

The invention disposes equipment for realizing time synchronization with a time reference station. The equipment comprises a signal source module which is used for generating a reference frequency signal and a first time signal; a satellite card which is used for receiving a satellite signal and outputting satellite card data and a second time signal in real time; a time interval counter module which is used for receiving the first time signal through utilization of a first channel and the second time signal through utilization of a second channel, and measuring a first time difference value between the first time signal and the second time signal; a remote data transmission module which is used for receiving satellite-ground clock difference data of reference time sent by the time reference station, in real time; and a master module which is used for collecting the satellite card data, the first time difference value and the satellite-ground clock difference data, in real time, and generating time difference result data. The signal source module adjusts the reference frequency signal in real time according to the time difference result data, so the reference frequency signal and the reference time are synchronized. According to the equipment, the time synchronization can be carried out in real time, and the equipment has relatively high data confidentiality.

Description

technical field [0001] The invention belongs to the technical field of satellite timing, and in particular relates to a device for realizing time synchronization with a time reference station. Background technique [0002] In terms of time synchronization, with the continuous development of communication technology and other industries, higher requirements are put forward for time synchronization performance. -Advanced (Long Term Evolution) key technology CoMP-JP (Cooperative multiple point-Joint processing) multi-point cooperative transmission processing requires the relative time accuracy between adjacent base stations to be around ±500ns; future 5G (5th-Generation) mobile communication technology , which may require ultra-high-precision time synchronization on the order of hundreds of nanoseconds; another example, more distant quantum communication technology requires extremely high-precision time measurement technology to reduce the bit error rate of the quantum communic...

AI Technical Summary

Problems solved by technology

[0006] The reference clock source in the time synchronization network of the existing communications and other industries mainly uses cesium atomic clocks and GPS trainable clocks. Due to the lack of high-precision testing methods for performance evaluation, self-monitoring is often used. This testing method has defects and can only be judged Whether the equipment is working, but there is no way to characterize the change of the output signal performance, such as the frequency and time offset of the output signal cannot be correctly reflected, which may cause the clock of the entire synchronization network to be inaccurate

[0007] The time synchronization equipment in the prior art only supports one traceability mode, so the flexibility of the equipment is poor, and the working mode cannot be flexibly configured according to the needs of customers, and there is no exception handling mechanism. When the satellite card is not available, the equipment is directly paralyzed

[0008] Furthermore, the common-view period of the time synchronization equipment in the prior art is set at 10 minutes or its integer multiples, and the setting of any common-view period cannot be realized, thereby restricting the type of signal source used by the equipment

[0009] In addition, in the time synchronization equipment of the prior art, the remote data transmission module is responsible for sending the local satellite-terrestrial clock difference data, which does not have confidentiality, and the data is easily leaked and lost. All user data needs to be sent to the data processing center for processing, which increases the load on the data processing center. When there are many online user stations, the data processing center will cause unnecessary delays

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