Method and device for taming rubidium clock by combining common-view and one-way time service of Beidou satellite

Abstract

The invention discloses a method and device for taming a rubidium clock by combining common view and one-way time service of a Beidou satellite. The device comprises a host provided with a display screen. A main control board is installed in the host, and is provided with a Beidou and time signal measurement module, a data collection processing and display control module, a power module, and a phase locking and rubidium clock module. According to the method, the working principle is simple, the problem that a traditional Beidou cannot trace the UTC time during rubidium clock taming and the time service deviation is large is solved, and meanwhile the problems that the taming period of taming a rubidium clock through a Beidou common-view method is too long, common-view equipment breaks down or a communication link is abnormal, and time difference cannot be obtained for taming are solved.

Description

technical field [0001] The invention relates to the technical field of Beidou, in particular to a method and a device for taming a rubidium clock jointly with Beidou satellite common viewing and one-way timing service. Background technique [0002] The common-view time transfer using the satellite navigation system, also known as the common-view time comparison, is the most widely used remote time transfer method. The satellite navigation system signal is used for common-view to obtain the time difference between two clocks in different places. Through this method, common-view devices distributed in various places obtain the time difference between the local clock and the national time-frequency measurement standard (atomic time reference UTC(k)), which is used to tame the local rubidium clock and achieve the purpose of remote time traceability. [0003] The rubidium clock has the characteristics of high short-term stability, small size, portability, and reasonable price. Ho...

AI Technical Summary

Problems solved by technology

[0004] At present, the Beidou one-way time service tame rubidium clock is widely used in the market, but there is a problem that the time service deviation is large and cannot be traced to UTC; and the rubidium clock tamed by satellite common-view technology widely uses the GNSS common time transfer standard (CGGTTS) There are two problems in using this standard to tame the rubidium clock when transmitting the time difference: 1. The period is too long, and the shortest interval is 16 minutes; 2. The time difference cannot be obtained due to the failure of the common-view device of the reference clock or the abnormal communication link

These two problems lead to too long taming interval or no reference clock for taming, which reduces the reliability of the system and makes it difficult to improve the long-term stability of the rubidium clock and the accuracy of the reference time difference

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