AIS-system-based wireless relay network implementing method

Abstract

The invention discloses an AIS-system-based wireless relay network implementing method. The AIS-system-based wireless relay network implementing method comprises the following steps: providing a shore-based AIS base station and wireless relay network ship-borne equipment, wherein the wireless relay network ship-borne equipment comprises a wireless relay network protocol module and an AIS mainframe; according to the shipping dynamic state of a ship in a shipping lane, actively sending an AIS message for monitoring the ship in the shipping lane and automatically forwarding AIS monitoring information of other ships by the wireless relay network ship-borne equipment; setting a forwarding frequency flag bit in a relay message by the wireless relay network protocol module so as to prevent two pieces of equipment from entering an infinite loop state in which the two pieces of equipment repeatedly forward the relay message of the opposite side mutually; periodically broadcasting a coverage identifying message of the AIS base station outwards by the shore-based AIS base station, receiving and indentifying the forwarded ship relay message, and converting the relay message into AIS position information after the relay message is analyzed. After application of the AIS-system-based wireless relay network implementing method, the monitoring ranges of a coastal area and an inland AIS base station can be widened, the AIS monitoring effect on a ship in an inland shipping lane can be improved, communication expenses are not generated and the application value is high.

Description

technical field [0001] The invention relates to the field of ship wireless communication equipment, in particular to a method for realizing a wireless relay network based on an AIS system. Background technique [0002] As an important part of my country's modern transportation system, inland navigation has become an important resource for realizing economic and social modernization. Effective monitoring of ships in inland waterways is the basis for realizing shipping informatization. Over the years, waterway management departments have tried different technical means to achieve this goal. Currently, widely used monitoring means include AIS ship automatic identification system and GPRS system. However, due to the complex geographical environment of the channel, the monitoring effect is not ideal, and there are still loopholes, which bring great safety hazards to the supervision of ships. [0003] AIS stands for Automatic Identification System (Automatic Identification Syste...

AI Technical Summary

Problems solved by technology

The geographical environment of the inland waterway is complex, and the ships in the waterway are easily blocked by objects such as mountains and cross-river buildings, which affects the AIS communication signal and causes AIS base stations to have monitoring blind spots for the coverage of individual areas, which brings great difficulties to the supervision of ships. Security risks

The measures that can be taken at present can only be realized by erecting more AIS base stations along the waterway, but the construction and maintenance costs of standard AIS base stations and related auxiliary towers are relatively high, so it is not suitable for a large number of erection in the waterway

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