Beidou/global position system (GPS) time signal-based time service system for communication network

A technology of GPS time and communication network, which is applied in the field of communication network timing system, can solve the problems that the network establishment time of frequency hopping radio stations cannot be met, the establishment time of frequency hopping communication network is long, and the time of keeping short synchronization is long, etc., so as to reduce the overhead of radio synchronization , shorten the synchronization establishment time, and meet the effect of high precision

Active Publication Date: 2013-01-16
武汉中元通信股份有限公司
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Problems solved by technology

[0003] In the design process of traditional frequency hopping radio stations, limited by the temperature-compensated crystal with low precision, the establishment time of the frequency hopping communication network is relatively long, the synchronization maintenance time is relatively short, and synchronization information needs to be continuously sent during

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  • Beidou/global position system (GPS) time signal-based time service system for communication network

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Embodiment Construction

[0054] See figure 1 Shown are specific embodiments of the present invention.

[0055] From figure 1 As can be seen:

[0056] The present invention is a communication network time service system based on Beidou / GPS time signal, including a power supply module 1, a Beidou module 2, a GPS module 3, a clock module 4, a main control module 5 and A panel module 6, a total of 6 parts are combined to form a whole, of which:

[0057] The main control module 5 includes an operating system ARM module U13, an FPGA large-scale field programmable array module U14, a display control buffer drive module U15, an Ethernet module U16, a level conversion module U17, one 2MHz clock signal buffer drive module U18.

[0058] The clock module 4 includes a CPLD module U9, a 10MHz thermostatic crystal module U10, a DDS module U11, and an operating system ARM module U12.

[0059] The interface module 6 includes a Beidou / GPS antenna interface module U19, a display control module U20, an Ethernet interface modul...

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Abstract

The invention discloses a Beidou/global position system (GPS) time signal-based time service system for a communication network. The system comprises a power module 1, a Beidou module 2, a GPS module 3, a clock module 4, a master control module 5 and a panel module 6, which are combined into a whole. Beidou/GPS time is used for synchronizing the clock of a constant temperature crystal, the accuracy and stability of the clock frequency of the crystal are improved, high-accuracy and high-stability radio station time service signals and standard time service signals are output through the clock, and an external time service signal input interface is provided. A precision phase difference compensation technology and a time service error control technology are adopted, so that the synchronization time of a frequency hopping radio station is shortened, synchronization hold-in and synchronization maintenance during a radio silence period are ensured, and the synchronization overhead of the radio station is reduced. High-accuracy RS232-level and RS422-level standard time service signals are provided, so that the requirements of modern communication for the high accuracy of time signals can be met. The system has the characteristics of rational design, high reliability, high environmental adaptability, small size, convenience for use and the like.

Description

Technical field [0001] The invention relates to a time service system, in particular to a communication network time service system based on Beidou / GPS time signals. Background technique [0002] At present, as the anti-jamming communication requirements of communication equipment are getting higher and higher, the communication traffic continues to increase, which poses higher and higher challenges to the hopping speed and communication rate of frequency hopping radio stations. The increase in speed has led to higher requirements for the high-precision clock in the frequency hopping radio station, so that the communication system can shorten the network establishment time of the frequency hopping radio station during communication networking, and extend the synchronization holding time as much as possible. [0003] In the design process of the traditional frequency hopping radio station, limited by the temperature-compensated crystal with lower accuracy, the establishment time of ...

Claims

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Application Information

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IPC IPC(8): H04L7/00G04G7/00
Inventor 严忠黄显能王昌平姚洁吴海翔黄华东黄祥黄昌亮付世刚张佳兰闰涛
Owner 武汉中元通信股份有限公司
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