High-precision time synchronization system and method based on GPS, BD and rubidium atomic clock

Abstract

The invention discloses a high-precision time synchronization system and method based on GPS, a BD and a rubidium atomic clock. The high-precision time synchronization system comprises a satellite time signal source module, a satellite time signal processing module, a main control module and an atomic clock synchronous adjusting module. The satellite time signal source module is connected with thesatellite time signal adjusting module and used for receiving satellite time information and sending the satellite time information to the signal processing module; the satellite time signal processing module is used for processing the received satellite time information, parsing the satellite time information and corresponding second pulses, and sending the satellite time information and the corresponding second pulses to the main control module; the main control module is used for sending the received satellite time information and the corresponding second pulses to the atomic clock synchronous adjusting module; the atomic clock synchronous adjusting module is connected with the rubidium atomic clock and used for synchronously adjusting the rubidium atomic clock according to the received satellite time information and the corresponding second pulses. The high-precision time synchronization system can conduct high-precision real-time synchronization on the rubidium atomic clock by using second-generation clock information of the GPS and BD and output clock signals through optical fiber connectors, PTP network connectors, serial ports and the like.

Description

technical field [0001] The invention relates to the technical field of time synchronization of power systems, in particular to a high-precision time synchronization system and method based on multi-source time service of GPS, BD second generation and rubidium atomic clock. Background technique [0002] With the rapid development of science and technology, in the fields of national defense, communications, aerospace, electric power, environmental monitoring and other fields, the amount of information required to be tested and processed is increasing, and the speed is getting higher and higher, and the spatial positions of the test objects are dispersed. The test system is complex and the test system is huge. Only by distributing the various test equipment units constituting the system in various test nodes with geographically dispersed locations and building a distributed test system can it meet the needs of this type of information collection. Time is a very important parame...

AI Technical Summary

Problems solved by technology

However, in important fields, a large number of GPS time service (time service refers to the use of radio waves to broadcast standard time signals) modules will have an adverse impact on my country's national security due to the excessive dependence on them; due to the SA policy adopted by the United States, resulting in The timing accuracy of commercial GPS systems currently on the market only reaches the microsecond level

When the quartz crystal method is used for synchronization, the temperature stability of the working environment is high, and the aging rate is high after long-term use, so error calibration needs to be performed at regular intervals

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