Search and rescue positioning system and method

Abstract

The invention relates to a search and rescue positioning system and method. The method comprises the following steps: acquiring the longitude and latitude information of the position of a person in distress in a search and rescue terminal device carried by the person in distress through satellite positioning by using a navigation positioning module; transmitting information frames comprising the longitude and latitude information outwards at set time intervals respectively through an AIS (Automatic Identification System) module and a Beidou short message communication module; receiving the information frames through a Beidou short message communication system in an information resource center on a shore base to resolve the longitude and latitude information of the position of the person in distress, and performing Beidou short message communication with the Beidou short message communication module of the search and rescue terminal device; searching and rescuing AIS equipment carried by a search and rescue queue on site, and receiving the information frames broadcast on an AIS channel to resolve the longitude and latitude information of the position of the person in distress. By adopting the search and rescue positioning system and method, distress alerting combining active and accurate far distance and near distance is realized, the salvation efficiency is greatly increased, and the living rate of the person in distress is increased.

Description

technical field [0001] The invention relates to the fields of search and rescue positioning and communication, in particular to a search and rescue positioning system and method combined with a ship automatic identification system (AIS) and a Beidou satellite navigation system. Background technique [0002] At present, in terms of water distress alarm and position reporting, the search and rescue positioning and communication equipment mainly include lighting signal and radio signal equipment. [0003] Lighting signals include: flame signals, smoke signals, floating lights, signal bombs, seawater dyeing, reflective tapes and combined signals, which are used to mark the location of distress and prompt the search and rescue team to go to rescue after the distressed personnel find that the search and rescue team has reached the vicinity The means are passive positioning, mainly relying on vision to find people in distress. [0004] Radio signals mainly include radio positionin...

AI Technical Summary

Problems solved by technology

[0006] Since foreign navigation satellite systems such as GPS and GLONASS do not have communication capabilities, search and rescue positioning equipment based on GPS and GLONASS generally use a combination of navigation modules and radio transmission modules; maritime satellite communications are expensive and difficult to integrate

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