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Short-distance multi-node 10MHz signal synchronization method

A signal synchronization and multi-node technology, applied in short-distance communication services, synchronization devices, multiplexing communication, etc., can solve problems such as difficulty in ensuring synchronization characteristics, and achieve good synchronization performance

Pending Publication Date: 2022-05-10
NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP
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Problems solved by technology

However, the transmission delays of cables or optical fibers in different links are often different for the 10MHz reference signal, and it is difficult to ensure good synchronization characteristics for the 10MHz signals between these distributed nodes.

Method used

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  • Short-distance multi-node 10MHz signal synchronization method
  • Short-distance multi-node 10MHz signal synchronization method
  • Short-distance multi-node 10MHz signal synchronization method

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Embodiment Construction

[0031] Below, the present invention will be further described in conjunction with the accompanying drawings and specific embodiments.

[0032] In order to illustrate the technical solutions of the embodiments of the present invention more clearly, the accompanying drawings of the embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention, and those of ordinary skill in the art Generally speaking, other drawings can also be obtained based on these drawings on the premise of not paying creative work.

[0033] Such as Figure 1 to Figure 3 As shown, a short-distance multi-node 10MHz signal synchronization device and method specifically includes the following steps:

[0034] ① Construct a short-distance multi-node 10MHz signal synchronization device, which is composed of a clock generation unit, an equal-length cable assembly, and a portable phase comparator. The composition of...

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Abstract

The invention provides a short-distance multi-node 10MHz signal synchronization method, and belongs to the technical field of time frequency signal generation. A method of combining time difference measurement and time delay control of 10MHz signals is utilized, lead / lag phase control is carried out on the 10MHz signals, good synchronization performance of the 10MHz signals among a plurality of distributed tail nodes not exceeding 200m is achieved, and the synchronization precision of the 10MHz signals between any two tail nodes is smaller than or equal to 0.1 ns. The method can be used for providing 10MHz reference signal support with high-precision synchronization performance for various short-distance distributed electronic information systems.

Description

technical field [0001] The invention relates to the technical field of time-frequency signal generation, in particular to a short-distance multi-node 10MHz signal synchronization method. Background technique [0002] Electronic information systems often require a unified time-frequency system to provide a 10MHz reference signal, and transmit the 10MHz reference signal to several distributed nodes using cables or optical fibers as the reference time-frequency signal of the corresponding nodes. In order to keep each distributed node The information systems among them can work together with high precision, requiring high-precision synchronization performance between distributed nodes, generally requiring ≤0.1ns. However, the transmission delays of the cables or optical fibers of different links are often different for the 10MHz reference signal, and it is difficult to ensure good synchronization characteristics for the 10MHz signals between these distributed nodes. Contents o...

Claims

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Application Information

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IPC IPC(8): H04J3/06H04W4/80H04W56/00
CPCH04J3/0638H04W4/80H04W56/001
Inventor 戎强蔚保国王彬王永杰范广伟王铮刘铁强
Owner NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP
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