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Big dipper satellite synchronizing clock time signal B code generating method and apparatus

A Beidou satellite and synchronous clock technology, applied in the direction of pre-selected time interval generation device, time interval measurement device, clocks and watches, etc., can solve the problems of low time synchronization accuracy, inability to meet the timing accuracy requirements, safety hazards, etc., to achieve a good timing system , improved usability, high security effect

Inactive Publication Date: 2009-04-01
郑州威科姆技术开发有限公司
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

First of all, the time synchronization accuracy is low. The timing accuracy of the current IRIG-B (DC) products can only reach the order of us, which cannot meet the growing demand for timing accuracy.
Secondly, at present, a large number of time synchronization devices receive GPS satellite signals, and the GPS system is controlled by the United States, which has huge security risks and is not suitable for use in key fields such as electric power, telecommunications, and national defense

Method used

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  • Big dipper satellite synchronizing clock time signal B code generating method and apparatus
  • Big dipper satellite synchronizing clock time signal B code generating method and apparatus
  • Big dipper satellite synchronizing clock time signal B code generating method and apparatus

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Embodiment Construction

[0031] Such as figure 1 The functional block diagram of the design method of the present invention shown, its method step comprises:

[0032] a. Receive the Beidou satellite signal as the time source of the time synchronization clock;

[0033] b. The time information is maintained and processed to generate a DC B-code signal;

[0034] c. Using the generated DC B code to perform amplitude modulation to generate an AC B code signal.

[0035] The step a is: first amplify and filter the Beidou satellite signal received by the Beidou receiving antenna, then perform signal down-conversion, signal capture, tracking, demodulation and other processing to obtain the Beidou satellite message, and perform calculation processing on the Beidou message, Output time information and reference second pulse signal;

[0036] The step b is: 1. judge the time information to ensure the accuracy of the time signal; at the same time, the state of the Beidou receiving module 1 is detected, and when ...

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Abstract

The invention discloses a method for generating a B code of a time signal of a synchronizing clock of Beidou satellite. The method is characterized by comprising the following steps: a. a Beidou satellite signal is received as the time source of a time synchronizing clock; b. the time signal is subject to maintenance processing to generate a DC B code signal; and c. the generated DC B code is utilized to perform amplitude modulation to generate an AC B code signal. The method has the advantages that as IRIG-B receives the Beidou satellite signal and Beidou navigation system is completely controlled by China, devices have high safety; as the Beidou satellite is positioned on a geosynchronous orbit and does not involve inter-satellite switching, the time service system is good and the time service precision is high; as the time processing part of the IRIG-B adopts a time maintenance technology, the IRIG-B can judge the correctness of the time information output by a Beidou receiving module and maintain the time by self when the Beidou satellite signal is unavailable, therefore the correctness of the time information generated by the IRIG-B can be ensured, and the availability of the system is improved.

Description

technical field [0001] The invention relates to a method for generating a synchronous clock time signal, in particular to a method for generating IRIG series codes for a Beidou satellite synchronous clock time signal. Background technique [0002] With the rapid development of social productivity and the rapid development of science and technology, people have put forward higher and higher requirements for precision time and time accuracy, and various time service methods are constantly emerging. IRIG originated from the time synchronization of military shooting ranges. The time system in the shooting range provides standard time for satellite or spacecraft launches, conventional weapon tests, and measurement and control systems. IRIG-B is a kind of IRIG series code, which carries rich information, has good anti-interference performance, and has an international common interface. With its own advantages, IRIG-B is widely used in fields such as electric power, telecommunicat...

Claims

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Application Information

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IPC IPC(8): G04F5/00
Inventor 贾小波杨玉清吴淑琴李军华王文瑜
Owner 郑州威科姆技术开发有限公司
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