Maritime navigation rescue system based on Beidou satellite

Abstract

The invention relates to a maritime navigation rescue system based on a Beidou satellite. The system utilizes the specific short message communication function of the Beidou satellite navigation system, after a ground command and control center receives a distress message sent by a ship, the short message communication function of the Beidou satellite navigation system can be used for getting in touch with the ship in distress, the authenticity of the distress message is confirmed, and false alarms are greatly reduced. Meanwhile, a ship-mounted terminal of the system is free from restrictions of external factors of distance, weather, sea conditions and the like due to the short message communication function of the Beidou satellite navigation system, and has functions of actively sending position information of the ship in distress at any time and conducting short message communication with the ground command and control center at any time. The ship-mounted terminal is stable and effective, can accurately and timely send distress messages, and is helpful for ground staff to position and track people in distress, and thus the rescue speed is accelerated. Furthermore, compared with existing ships with mutually-independent navigation systems and rescue equipment, the ship-mounted terminal of the system has functions of navigation and rescue at the same time.

Description

technical field [0001] The invention relates to the field of maritime rescue based on satellite communication, in particular to a maritime navigation and rescue system based on Beidou satellites. Background technique [0002] The marine economy is an important direction for the future development of the world economy, providing a broad space and huge resources for the sustainable development of the world economy. Since the 1990s, the world's marine economic GDP has grown at an average annual rate of 11%, and sea voyages have become more frequent. With the increasing density of ship transportation and the increasing frequency of sea traffic, accidents in distress at sea are increasing year by year, often causing irreparable loss of life and property. When an accident occurs at sea, sea rescue is very important. At present, according to the requirements of international and domestic ship regulations, international and domestic ships with a gross tonnage of more than 300 are ...

AI Technical Summary

Problems solved by technology

[0003] However, this method of calling for help has the following disadvantages: 1) According to the 2005 IMO (International Maritime Organization, International Maritime Organization) investigation, there are defects in the design of alarm equipment such as EPIRB and DSC, which may cause false alarms; 2) The action distance is short , Since the frequency of VHF radio waves is between 30MHZ-300MHZ, the ionosphere cannot reflect, and the effective communication range is limited to the visual range. Only when there are other ships nearby, will the ship receive the distress signal and call for help. Response; 3) The EPIRB alarm has a large delay, and it is easy to miss the golden rescue time; 4) You cannot actively tell the search and rescue party the distress information such as your location and distress type, which is not conducive to the search and rescue personnel to quickly and accurately search and rescue persons in distress

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