Offshore high-frequency wireless chart updating system and method

An update method and chart technology, applied in transmission systems, electrical components, etc., can solve problems such as hidden dangers of ship navigation, long update cycle, small coverage, etc., to improve timeliness and accuracy, reduce crew workload, reduce The effect of the middle link

Inactive Publication Date: 2018-06-29
WUHAN UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The existing navigational warnings and notices to navigation are mainly through the coastal stations broadcasting Morse telegrams and NAVTEX broadcasting NBDP radio telex to realize the release of information. These two information release methods still have backward technical means, and it is difficult to guarantee timeliness. The disadvantage of small coverage, the ship cannot timely, comprehensively and systematically understand the safety information of the navigation sea area, which has great hidden dangers to the safety of ship navigation, and does not meet the needs of the development requirements of the modern information society
[0004] For example, the traditional maritime chart update requires CD-ROM mailing or online downloading and posting, which takes a long time and a long update cycle. It cannot update the chart files in a timely and effective manner, and maritime ships cannot obtain the required chart corrections and updates in time. Documents and news are often lagging behind. In 2017, there were several cases of shipwrecks in the waters of the Pearl River Estuary due to unupdated charts. As a result, there were great risks and hidden dangers to navigation safety and navigation

Method used

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  • Offshore high-frequency wireless chart updating system and method
  • Offshore high-frequency wireless chart updating system and method
  • Offshore high-frequency wireless chart updating system and method

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Embodiment Construction

[0037] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0038] refer to Figure 1 to Figure 7 As shown, the maritime high-frequency wireless chart update system in an embodiment provided by the present invention includes:

[0039] Broadcast control terminal 2: publish all the chart broadcast files to the data server 1, and the data server 1 sends the files to be released to the shore-based broadcast station 4;

[0040] Shore-based broadcast station 4: receives the chart broadcast file from the data server 1, converts the chart broadcast file into an OFDM signal, and broadcasts to the chart receiving terminal 6 through high-frequency radio signals;

[0041]Chart receiving terminal 6: through the antenna and receiver, the received signal is restored to the correct chart update file through data processing;

[0042] The broadcast control terminal 2 is connected to the shore-based broadcasting station 4 thro...

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Abstract

The invention discloses an offshore high-frequency wireless chart updating system and method. The system comprises a broadcasting control terminal, a shore-based broadcasting station and a chart receiving terminal, wherein the broadcasting control terminal is connected to a data server; the shore-based broadcasting station is connected to a shore-based network; the broadcasting control terminal and the data server are both connected to the shore-based broadcasting station through the shore-based network; and the shore-based broadcasting station is connected to the chart receiving terminal through a wireless transmission channel. According to the system and the method, a chart file can be conveniently transmitted, the system and the method can be seamlessly connected to a ship information system and equipment, the broadcasting efficiency is high, and the coverage area is wide; electronic chart correction information is directly broadcast, and the middle link is reduced in a manner of often receiving the files on the ship, the workload of sailors is reduced, and the timeliness and the accuracy of chart correction are improved.

Description

technical field [0001] The invention relates to the technical field of maritime safety information broadcasting, in particular to a system and method for updating high-frequency wireless charts at sea. Background technique [0002] In order to ensure the safety of navigation, it is necessary to provide timely and effective safety information about maritime navigation from the shore to ships sailing. Maritime Safety Information (MSI---Maritime Safety Information) refers to navigation warnings, weather reports, weather forecasts and information related to navigation safety. Additional emergency safety information. Relevant departments on shore broadcast important information about navigation safety to ships in major sea areas through NAVTEX coast station or INMARSAT. [0003] The existing navigational warnings and notices to navigation are mainly through the coastal stations broadcasting Morse telegrams and NAVTEX broadcasting NBDP radio telex to realize the release of inform...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/08
CPCH04L67/06H04L67/12
Inventor 刘敬贤王翔
Owner WUHAN UNIV OF TECH
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