Development and application of modern navigation information technology
Abstract: Information technology has been gradually applied to all fields of people's life and work. With the advent of the information age, information technology has also had an important impact on navigation technology. This paper briefly analyzes the development of modern navigation information technology, focusing on the application of modern navigation information technology, aiming at contributing to the development of navigation.
Keywords: modern navigation; Information technology; Development and application
With the continuous development of information technology and digital technology, great changes have taken place in navigation methods and technologies, and the application of network technology and wireless communication technology has prompted? Maritime digital traffic? With the formation of the pattern of navigation information technology, it is necessary to study the development and application of modern navigation information technology.
First, the development of modern navigation technology.
(1) electronic chart display and information system
Electronic chart display is an important technological revolution, which can dynamically display the geographical elements of the ocean on the computer screen in digital form. Electronic chart display is a collection of computer technology, geographic information system and multimedia technology, which can display marine information in various forms such as words, images, animations and sounds. Generally speaking, electronic charts display a large amount of information and are easy to store and carry. A CD can store hundreds of charts, and at the same time, it can store and modify data in a few seconds. Users can browse and download charts online at any time, which is of positive significance to realize the automatic navigation and control of ships.
(b) Use of satellite technology
Satellite technology mainly uses remote sensing satellites to observe the ocean, providing various parameters in the marine environment, such as sea surface temperature, wave direction, sea ice distribution, vortex, marine pollution, etc., so that ships can obtain a large number of high-resolution marine environmental information in time during navigation, and fully guarantee the navigation safety of ships [1].
(3) Automatic identification system
Automatic identification system makes the ship have the function of automatic identification, which is also of great significance to navigation, control and status report. For example, the automatic identification system is introduced into the ship traffic control system in Qinhuangdao sea area, which can transmit various information such as ship position, ship size, actual draft, arrival time and so on back to the ship traffic control center, realize accurate positioning and tracking of maritime targets, provide a series of navigation AIDS for ships, and help ship drivers to accurately obtain the information needed for collision avoidance and take reasonable avoidance actions.
(4) Maritime voyage recorder
The maritime navigation recorder made by computer technology connects VDR, ARPA, ECDIS and monitor, and can record the information transmitted between various maritime instruments in real time. It realizes the recording of all kinds of data during the voyage.
Second, the application of modern navigation technology
(A) the application of intelligent navigation system
Intelligent navigation system combines computer graphics processing technology, numerical weather forecast and other high-tech means. The electronic chart in the intelligent system covers all kinds of hydrological data and waterway data around the world, and records the necessary landforms such as navigation marks, obstacles, port facilities and coastline in the sea. Sailors can make relevant navigation plans on the platform of intelligent navigation system. The system can receive real-time ocean information by e-mail, and the intelligent navigation system can modify the charts in a short time, so that users can know the navigation-related information such as sea conditions, high-altitude pressure fields, tides and currents around the world, and the system can forecast the related ocean information in the next 7- 10 days.
Intelligent navigation system can accurately display the specific position and related dynamics of the ship, and can also grasp the information such as ship status, cargo load, route and so on in real time. In intelligent navigation system, GPS can be used for precise positioning. Once the ship deviates from the course and enters the dangerous area, the intelligent navigation system can give an alarm in time, so that the sailors can make adjustments quickly. The electronic chart can display the navigation state of the ship on the computer screen, and the black fairy of the intelligent navigation system will record the relevant state parameters. Electronic chart technology promotes the development of navigation technology and realizes the intelligence of navigation.
(B) the application of navigation information system
(1) chart correction
The data in the electronic chart is stored in the spatial database. Based on Internet technology, an electronic chart network platform can be established to publish the data in the chart to the website. Users can obtain chart information through the browser, and shipping websites can obtain relevant navigation notice information, and modify the data in the chart manually or automatically, and then publish it through the web for the use of sailing ships.
(2) Design route
Route design is of great significance to the safety of ship navigation. Information related to route design, such as chart information, recommended routes, navigation obstacles, tide tables, etc. , which can be browsed in many ways through the Internet. It is very convenient to design the route on the platform of electronic chart system, and at the same time, the scheduled route can be pre-checked through relevant chart information, which effectively ensures the safety of the route.
(3) Getting Started Guide
The database of shipping website contains all kinds of information about entering and leaving the port, such as port channel and water depth. It can provide information services to ships leaving the port through the Web, so that import and export ships can easily obtain the latest entry guide and realize the navigation function of ships entering and leaving the port.
(4) E-commerce
E-commerce refers to obtaining information through internet transmission on the network platform, so that relevant shipping companies can realize internal e-commerce functions, thus making shipping websites a trading platform.
(3)? Digital ocean? Application of
The application of digital ocean is mainly reflected in the following aspects: ① Automatic navigation module: obtaining various parameters of ship navigation through sensing technology, and comparing the set route with the early warning threshold to realize the automatic navigation function; (2) collision avoidance module: collision avoidance has always been a difficult and hot spot in navigation, especially when multiple ships meet, the application of automatic ship identification system can put forward a new scheme for effective collision avoidance; (3) Emergency treatment module: ARPA, AIS, etc. It can be used to monitor ships at sea, ports and waterways. , and the setting of early warning area can help commanders deal with emergencies effectively [2]; ④ Information exchange module: The information exchange module is also a communication module. Modern HNA can realize information exchange and communication through satellite, GSM and other means, which plays an important guiding role in the safe navigation of ships.
Conclusion: To sum up, people have gradually entered the information age, and the application of information technology has gradually changed people's lifestyle and brought great changes to navigation. The development and application of modern navigation information technology is of great significance to ensuring navigation safety and promoting the development of navigation. The shipping industry should actively seize the opportunity, constantly improve modern navigation information technology, and make modern navigation enter a new era.
refer to
[1] Fang, Shen Fangfang. The influence of information technology on modern navigation system and its development trend [J]. Journal of Zhejiang Communications Vocational and Technical College, 2005,03:17-20.
[2] Su, Liu Zhongxue, Wang Liansheng, Luo Jianjun, Wang Liangcheng. The application prospect of modern communication information technology in maritime communication [J]. Telecommunication Technology, 20 1 1, 04: 126- 130.
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