Database-based Changjiang river electronic waterway chart production and application method

Abstract

The invention discloses a database-based Changjiang river electronic waterway chart production and application method. The method comprises the following steps of: performing third-party check on surveying and mapping data, and taking the checked surveying and mapping data as mapping data; importing the mapping data into a source database according to a preset mapping relation; generating isobaths and depth areas according to the data in the source database, splicing objects which cross map sheets; storing an electronic waterway chart of the whole line of the Changjiang river which is obtained by cutting according to map sheet zoning regulations and serves as product data in a product database; issuing the Changjiang river electronic waterway chart online by adopting an encryption technology; and dumping the Changjiang river electronic waterway chart based on a waterway spatial data model, providing waterway element information for inquiring and analyzing; and simultaneously performing slicing processing on each map layer in the spatial data model, and taking the processed map layer as the base map for issuing the Changjiang river electronic waterway chart online. According to the method, electronic marine chart international standards and Changjiang river characteristics are combined, the production of data-driven Changjiang river electronic waterway chart is realized, and latest Changjiang river electronic waterway chart service and application are provided for the public, ports, the Changjiang river shipping enterprises and shipping management departments in time.

Description

technical field [0001] The invention belongs to the field of intelligent shipping and ship navigation, and in particular relates to a method for producing and applying a Yangtze River electronic waterway chart based on a database. Background technique [0002] With the rapid development of social economy, all countries in the world are accelerating the informationization of shipping, increasing the research and development of electronic charts and shipping information service technologies, and initially forming some standards and specifications, production systems and application service technologies related to electronic charts. Effectively promote the production and application of electronic charts. [0003] In order to improve shipping efficiency, promote cross-border and cross-regional transportation, and resolve "information barriers" caused by differences in technical systems and operating mechanisms, the European Union proposed in 2005 to carry out the construction of...

AI Technical Summary

Problems solved by technology

[0005] (1) Lack of overall planning and coordination, unbalanced development of different places and different departments, fragmentation and repeated investment, resulting in relatively weak overall information service capabilities

The information sharing mechanism and the corresponding supervision mechanism are not perfect, and the limited information resources cannot be applied in a timely, sufficient and effective manner, resulting in a relative shortage of information resources

[0006] (2) The standard specification system is relatively unsound, and seamless interconnection has not yet been truly realized

The electronic chart standards widely adopted in the world mainly include IHO Digital Hydrographic Data Transmission Standard (S-57), IHO Digital Hydrographic Data Inspection Standard (S-58), IHO Digital Hydrographic Data Protection Scheme (S-63), etc. , these standards are mostly used at sea, and cannot fully meet the characteristics and application requirements of the Yangtze River waterway

[0007] (3) The existing electronic waterway chart data production technology is mostly based on the file mode, which requires a lot of manual editing work, the degree of automation of data production is low, and there are many tedious tasks, resulting in low production efficiency, which is not conducive to the rapid batch production of electronic waterway charts , which cannot meet the needs of rapid update of the elements of the Yangtze River waterway

[0008] (4) Existing channel charts have a single product category, and most services are provided in the form of paper navigation reference charts, without network services, which cannot keep up with the pace of modern information technology development

In recent years, although some inland river electronic waterway charts have been produced and applied, they only have a relatively simple navigation service function, which belongs to the further transformation and improvement of traditional paper navigation reference charts, and cannot meet the urgent needs of all sectors of society for the Yangtze River electronic waterway chart data services demand, unable to meet the requirements of the rapid development of the Yangtze River Shipping

[0009] (5) Lack of a unified comprehensive information service platform for river basin shipping, making it difficult to provide high-quality, high-level "one-stop" comprehensive information services

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