GMDSS central control system

Abstract

The invention discloses a GMDSS central control system which comprises a VHF dispatching command center, the VHF dispatching command center is in signal connection with province and city dispatching clients through an IP network, and a VHF base station is connected with a signal receiver loaded in a ship through a wireless signal. A network test module and a network selection module are further loaded in the ship, a test signal receiving module is further arranged in the VHF base station, the network selection module arranged in the ship selects an optimal information transmission channel, theship is communicated with a signal transmission port of the VHF base station, and optimal information transmission is achieved. According to the GMDSS central control system, when the network connection with the ship is abnormal, the network test module in the ship can test the network quality of each communication channel, and the most suitable communication channel is selected through the network selection module, so that the communication quality is ensured; and if the communication is abnormal or even lost, the ship position is calculated according to the driving condition before the shipis lost, and the ship driving route and the driving speed are simulated, so that the search and rescue of the search and rescue ship are facilitated.

Description

technical field [0001] The invention belongs to the technical field of marine dispatching of ships, and in particular relates to a GMDSS central control system. Background technique [0002] The Global Maritime Distress and Safety System (GMDSS) refers to the maritime radio communication system proposed and implemented by the International Maritime Organization (IMO) for maritime distress, safety and daily communications. It is composed of international mobile satellite communication system, low polar orbit search and rescue satellite system and very high frequency (VHF), medium / high frequency (MF / HF) ground frequency communication system, etc. It has distress alarm, search and rescue coordination communication, rescue on-site communication, Maritime safety information broadcasting, location finding, daily communication, bridge-to-bridge safety avoidance communication and other functions. Once a ship is in distress, GMDSS can immediately report the distress information to t...

AI Technical Summary

Problems solved by technology

[0003] The existing GMDSS system uses a real-time network for ship dispatching and navigation. Once the communication line fails, the ship will lose contact with the dispatching center, which will easily cause navigation hazards and greatly affect the ship’s navigation speed. At that time, due to the influence of ocean water flow, it is difficult to grasp the specific position of the ship, and it is inconvenient to search and rescue the follow-up rescue ships.

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