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UTC time synchronization processing system based on on-board vde

A technology of time synchronization and synchronization processing, which is applied in the field of space-borne communication, can solve problems such as poor system synchronization, information accuracy and integrity impact, and achieve reliable management, improve reliability and accurate communication efficiency, and reduce time loss. Effect

Active Publication Date: 2021-04-02
SHANGHAI SPACEFLIGHT ELECTRONICS & COMM EQUIP RES INST
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to provide a UTC time synchronization processing system based on spaceborne VDE, to solve the problem that the accuracy and integrity of information are affected by the poor synchronization of existing systems

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  • UTC time synchronization processing system based on on-board vde
  • UTC time synchronization processing system based on on-board vde

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Embodiment Construction

[0025] The technical solutions in the embodiments of the present invention will be clearly and completely described and discussed below in conjunction with the accompanying drawings of the present invention. Obviously, what is described here is only a part of the examples of the present invention, not all examples. Based on the present invention All other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0026] In order to facilitate the understanding of the embodiments of the present invention, specific embodiments will be taken as examples for further explanation below in conjunction with the accompanying drawings, and each embodiment does not constitute a limitation to the embodiments of the present invention.

[0027] Such as figure 1 As shown, the present embodiment provides a UTC time synchronization processing system based on on-board VDE, including: a time synchronization s...

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Abstract

The invention provides a UTC time synchronization processing system based on satellite-borne VDE, and the system comprises a time synchronization state management module which is used for the UTC timesynchronization management of the satellite-borne VDE, and carrying out the management of a synchronization mode, a synchronization state and synchronization maintenance at a corresponding time node;a direct synchronization processing module which is used for performing direct synchronization processing under the condition that the preset synchronization waiting time in the timer is not overtimeaccording to the accurate time information and the PPS pulse signal obtained from a GPS antenna end; a synchronization maintenance processing module which is used for carrying out synchronization maintenance processing if the accurate time information and the PPS pulse signal are not acquired within the preset synchronization maintenance time in the timer; an indirect synchronization processing module which is used for carrying out indirect synchronization processing under the conditions that direct synchronization processing cannot be detected and synchronization maintaining processing is overtime; and a timer time processing module which is used for carrying out accurate calculation and priority switching control on the duration of the direct synchronization processing, the synchronization maintaining processing and the indirect synchronization processing.

Description

technical field [0001] The invention relates to the technical field of satellite-borne communication, in particular to a UTC time synchronization processing system based on satellite-borne VDE. Background technique [0002] With the development of maritime communication technology, in order to solve the bottleneck of serious time slot conflict and low communication rate in the existing ship AIS communication system in some areas, the International Organization of Navigational Lights (IALA) proposed the VDE (VHF Data Exchange) communication system for ships. And in the VDE system, the communication link between the satellite and the ship is added to meet the different needs of offshore and open sea ships, laying the foundation for future complex and multi-functional maritime communication applications. [0003] Time synchronization technology is a key technology in the spaceborne VDE communication system, and the quality of the time synchronization method will affect the reli...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04J3/06H04B7/185
CPCH04B7/1851H04J3/0638
Inventor 殷惠惠向前李惠媛张喆安然田运通
Owner SHANGHAI SPACEFLIGHT ELECTRONICS & COMM EQUIP RES INST
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