Multi-mode high-precision timing system and method

Abstract

The present invention belongs to the field of the whole network time synchronization, and especially relates to a multi-mode high-precision timing system and method. The system provided by the invention comprises a Beidou timing unit, a GPS timing unit, an IRIG-B timing unit, a taming timekeeping unit and a timing algorithm unit. The Beidou timing unit, the GPS timing unit and the IRIG-B timing unit are in both-way communication connection with the timing algorithm unit, and the timing algorithm unit is in both-way communication connection with the taming timekeeping unit; and the taming timekeeping unit includes a taming timing circuit, in the condition of Beidou pulse signals, GPS pulse per second signals and IRIG-B pulse per second signals are all lost, the taming timing circuit enters a timekeeping state, and the timing algorithm unit outputs timing time and timing pulse per second. Through adoption of Beidou satellite time, GPS satellite time and IRIG-B code time as external clock source of a timing system, the multi-mode high-precision timing system and method is able to avoid the problem caused by unstable time performance of a PGS satellite, and is high in precision, good in reliability and stable in performance.

Description

technical field [0001] The invention belongs to the field of time synchronization of the whole network, and in particular relates to a multi-mode high-precision timing system and a timing method thereof. Background technique [0002] The time synchronization of the whole network mainly uses the time synchronization system to perform high-precision time service for each clock in the network. The clock source and timing algorithm used by the time synchronization system will directly affect the accuracy and reliability of the network time service to which it belongs. The current time reference basically All rely on the satellite clock source GPS timing. Since GPS time belongs to the United States, the accuracy of GPS signals is controlled by the US military, and it cannot guarantee accurate, reliable and stable satellite timing signals at all times. Therefore, it is very necessary to introduce other timing sources on the basis of GPS timing and provide a satellite timing system...

AI Technical Summary

Problems solved by technology

[0002] The time synchronization of the whole network mainly uses the time synchronization system to perform high-precision time service for each clock in the network. The clock source and timing algorithm used by the time synchronization system will directly affect the accuracy and reliability of the network time service to which it belongs. The current time reference basically All rely on the satellite clock source GPS time service. Since GPS time belongs to the United States, the accuracy of GPS signals is controlled by the US military, and it cannot guarantee accurate, reliable and stable satellite time service signals at all times.

Images