BPC Beidou multi-mode timing method and system

Abstract

The invention provides a BPC Beidou multi-mode timing method and system. The method comprises the following steps of: receiving a BPC low-frequency timing signal broadcasted by a BPC signal transmission tower of the national timing center and a Beidou navigation signal transmitted by a Beidou satellite; determining if the received BPC low-frequency timing signal and the Beidou navigation signal are normal; if the Beidou navigation signal is abnormal, selecting the BPC low-frequency time code timing mode for timing; if the BPC low-frequency timing signal is abnormal, selecting the Beidou satellite timing mode for timing; if the Beidou navigation signal and the BPC low-frequency timing signal are normal, selecting both the BPC low-frequency time code timing mode and the Beidou timing mode for timing; and correcting the BPC low frequency time code timing by Beidou positioning. According to the BPC Beidou multi-mode timing method and the system, various timing modes are provided, a corresponding timing mode can be selected according to whether the received BPC low frequency timing signal and the Beidou navigation signal are normal, a BPC signal transmission delay can be corrected by the Beidou positioning so as to provide high precision timing, and flexibility and reliability of timing are improved.

Description

technical field [0001] The present invention mainly relates to the field of timing technology processing, in particular to a BPC Beidou multi-mode timing method and system. Background technique [0002] Time is the most basic physical quantity that characterizes the movement of matter, and is an important part of the development of human civilization. Time is currently the most accurate and widely used physical quantity among all physical quantities. With the development of my country's national economy, national defense construction and space technology, higher and higher requirements are put forward for the accuracy, stability, reliability and all-weather of high-precision time-frequency services. Beidou satellite timing and BPC low-frequency time code timing are two commonly used timing modes at present, but the current single timing mode can no longer meet the requirements of users. , The influence of the weather leads to abnormal signals, resulting in inaccurate timing...

AI Technical Summary

Problems solved by technology

Beidou satellite timing and BPC low-frequency time code timing are two commonly used timing modes at present, but the current single timing mode can no longer meet the requirements of users. , The influence of the weather leads to abnormal signals, resulting in inaccurate timing of BPC low-frequency time codes. Beidou satellite signals are easily affected by indoor environments, resulting in abnormal signals and inaccurate timing of Beidou satellites. Therefore, the single timing mode is flexible. There are deficiencies in sex and reliability

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