Communication network timing system based on Beidou/gps time signal

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-interference communication requirements of communication equipment are getting higher and higher, the communication traffic is increasing, which poses higher and higher challenges to the jump speed and communication rate of frequency hopping radio stations. The increase in speed leads to higher requirements for high-precision clocks in frequency-hopping radios, so that the communication system can shorten the network establishment time of frequency-hopping radios and prolong the synchronization maintenance time as much as possible. [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 ...

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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 the communication process, so that Increased network overhead; traditional frequency hopping radio takes a long time to recover from the silent state to the combat state; multi-level networking takes a long time, which cannot meet the requirements of short network establishment time and long synchronization maintenance time of frequency hopping radio stations

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