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Clock and time frequency integrated transmission method and device

A transmission method and time-frequency technology, applied in the field of communication transmission, can solve problems such as time-frequency integrated transmission synchronization, and achieve the effects of low cost, link multiplexing, and simple structure

Active Publication Date: 2019-01-11
郑州威科姆华大北斗导航科技有限公司
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AI Technical Summary

Problems solved by technology

[0003] The present invention provides a method of using the existing time transmission link to realize accurate transmission of time and frequency, which can solve the synchronization problem of time-frequency integrated transmission

Method used

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  • Clock and time frequency integrated transmission method and device
  • Clock and time frequency integrated transmission method and device
  • Clock and time frequency integrated transmission method and device

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Embodiment Construction

[0039] Such as Figure 1-7 As shown, a clock time-frequency integrated transmission method includes the following steps:

[0040] 1) The sending module receives the external input time reference and frequency reference, and the external input signal is time information and second pulse;

[0041] 2) The time reference passes through the B-code encoding unit to obtain the B-code symbol and transmits it to the time-frequency waveform generation unit;

[0042] Time reference: input second pulse and time information, or B-code symbol signal; when inputting second pulse and time information, generate B-code symbol through second pulse and time information;

[0043] B code symbol generation algorithm: by inputting the second pulse and time information, according to the B code generation algorithm, generate the corresponding B code symbol. The basic code elements of the B code include "0" symbol, "1" symbol and "P" symbol, each symbol takes up 10ms, and the pulse width corresponding...

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Abstract

The present invention relates to the field of communication transmission, especially to a clock and time frequency integrated transmission method and device. A sending module receives time standard and frequency standard input by an external portion; the time standard obtains B-code code elements through a coding unit; a standard frequency Fs is employed to generate a high-frequency work frequencyFns through a frequency multiplier circuit; the time standard and the frequency standard performs frequency phase modulation to achieve synchronization and generate time-frequency integrated signals;a restoring unit restores a corresponding B-code code element waveform; a decoding unit solves the B-code waveform and outputs time information and pulse per second signals; a frequency restoring unit restores standard frequency signals, and the standard frequency signals are output after shaping. The clock and time frequency integrated transmission method and device employ IRIG-B codes to perform time transmission and complete accurate frequency transmission at the transmission bottom layer to achieve time-frequency integrated transmission through signals with the same transmission frequencyperiod and different duty ratios, namely, one transmission link achieves accurate transmission of the time and the frequency based on the B codes, and therefore, the link reusing is achieved, the cost is low, the structure is simple, and the transmission is reliable.

Description

technical field [0001] The invention relates to the field of communication transmission, in particular to a clock time-frequency integrated transmission method and device. Background technique [0002] With the development of science and technology and the improvement of automation, time-frequency synchronization technology plays a vital role in the fields of electric power and communication. It is the basis for the normal operation of power grids and communication networks. The current time synchronization system has matured and played important basic role, but the transmission of frequency synchronization technology has not yet been popularized. Contents of the invention [0003] The present invention provides a method for realizing accurate transmission of time and frequency by using the existing time transmission link, which can solve the synchronization problem of time-frequency integrated transmission. [0004] In order to solve the above problems, the scheme adopte...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04J3/06H04L27/00H04L27/26
CPCH04J3/0638H04L27/0014H04L27/2671H04L27/2672H04L2027/0024
Inventor 贾小波吴淑琴张蕊张筱南张治功梁永涛
Owner 郑州威科姆华大北斗导航科技有限公司
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