Search and rescue system and method based on Beidou high-precision positioning AIS terminal

Abstract

The invention relates to the technical field of rescue, and particularly discloses a search and rescue system and method based on a Beidou high-precision positioning AIS terminal, and the system comprises the Beidou high-precision positioning AIS terminal for acquiring differential message information, a communication module, and an intelligent life jacket. The intelligent life jacket comprises alife jacket body and an AIS function module. The AIS function module comprises a processing unit, a radio frequency emission unit, a Beidou positioning unit and a 433M transmit-receive unit. The Beidou high-precision positioning AIS terminal is used for sending the acquired differential message information to the 433M transmit-receive unit through the communication module. The Beidou positioning unit is used for acquiring Beidou positioning data and correcting the Beidou positioning data based on the differential message information to generate corrected Beidou positioning data. The processingunit is also used for verifying and packaging the corrected Beidou positioning data, generating AIS series messages and sending the AIS series messages to the radio frequency emission unit. By the adoption of the technical scheme, the rescue success rate of crew falling into water can be increased.

Description

technical field [0001] The invention relates to the technical field of rescue, in particular to a search and rescue system and method based on a Beidou high-precision positioning AIS terminal. Background technique [0002] The positioning and navigation of the ship mainly depends on the satellite navigation system. At present, the global satellite navigation systems include GPS system, Galileo satellite navigation system, GLONASS system and Beidou system. At the moment when the Beidou-3 global system is ready, the work of improving the accuracy of ship positioning by using the communication between the differential positioning module and the Beidou system, and using the differential data with the ground to perform differential positioning is also gradually advancing. [0003] In order to cooperate with the Beidou system, the Beidou high-precision positioning AIS (Automatic Identification System, automatic ship identification system) terminal appeared. The Beidou high-precis...

AI Technical Summary

Problems solved by technology

In addition, satellite emergency radio position indicating beacons, radar transponders, etc. are also involved in the ship's alarm and rescue. However, these methods are mostly used for rescue calls for obvious targets such as ships, and there are relatively few rescue methods for small targets such as crew members.

[0005] At present, the main equipment is only life jackets with AIS launch function. They send rescue information to the base station or other ships by broadcasting the content of the No. 1 message and the No. 14 message. However, the lack of differential positioning information makes the positioning accuracy relatively poor, and the search and rescue process is more difficult.

At the same time, when a ship is in distress, some crew members fall into the water or drift away with the current, which further increases the difficulty of obtaining the exact location of the crew, and it is easy to miss the golden rescue time, which will reduce the success rate of rescue.

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