Method and device for generating timing signals

Abstract

The invention relates to a method and a device for generating timing signals. The device for generating the timing signals comprises a reference clock module for generating a reference timing signal B and a synchronization module for synchronizing a timing signal T by the reference timing signal B to generate a new timing signal Y. The method for generating the timing signals comprises the following steps of: comparing the timing signal T with the reference timing signal B, calculating the signal difference of the timing signal T and the reference timing signal B, and adjusting the reference timing signal B according to the signal difference D to obtain the new timing signal Y. Reference timing is generated by introducing a high-precision clock to improve the time tolerance of timed equipment for obtaining knowable uncertain errors; and a statistical method is used to reduce the transmission of unknowable uncertain errors in the timing signals to new timing signals.

Description

technical field [0001] The present invention relates to a method and device for generating a timing signal, specifically, a method for generating a new timing signal with higher precision based on a timing signal with its own high jitter. Background technique [0002] Timing signals are a critical input that electronic equipment, especially Time Division Synchronous Code Division Multiple Access (TD-SCDMA) communication equipment relies on. [0003] Timing signals are often provided by satellite timing synchronization systems, such as Global Positioning System (GPS) / Global Navigation Satellite System (GLONASS) / Beidou and other satellite timing synchronization systems. [0004] Timing signals are provided by a satellite timing synchronization system, with some limitations: [0005] 1. It is necessary to look directly at multiple satellites, and it is inconvenient to install the antenna; [0006] 2. It is greatly affected by satellite coverage and weather; [0007] 3. There...

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Problems solved by technology

[0004] Timing signals are provided by a satellite timing synchronization system, with some limitations:

[0005] 1. It is necessary to look directly at multiple satellites, and it is inconvenient to install the antenna;

[0006] 2. It is greatly affected by satellite coverage and weather;

[0007] 3. There is a political risk of national sovereignty;

[0008] 4. The wireless signal is weak and susceptible to interference

[0015] The methods and devices for providing timing signals in the prior art have the following disadvantages: firstly, the unknown uncertain error is directly transferred to the new timing signal; secondly, it is known that the uncertain delay needs to reach the timing device within the timing period, Otherwise, the time-serving device cannot calculate the dynamic delay

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