Mobile terminal positioning system and method suitable for disaster occasions such as earthquake

Abstract

The invention discloses a mobile terminal positioning system and method suitable for disaster occasions such as an earthquake. A master base station and two slave base stations are disposed at angular points of the triangle covering an area where a to-be-positioned mobile phone is located, the master base station is used as reference to build coordinates, the master base station transmits a signal or increase signal power to trigger the mobile phone to perform cell reselection so as to allow the mobile phone to be accessed to the master base station, the master base station transmits an induction signal to the mobile phone to induce the mobile phone to transmit signals and transmits the induction signal transmitted to the mobile phone to the slave base stations, and the signals transmitted by the mobile phone is received by the slave base stations; the slave base stations kept being communicated with the master base station, and the slave base stations acquire the signals transmitted by the mobile phone at channels allocated by the master base station and transmit received data information to the master base station. The mobile terminal positioning system and method has the advantages that positioning methods such as TDOA, SSOA and AOA are used, high positioning precision is achieved, and the system and method is applicable to complex disaster environments; the system is small in size, portable, and capable of being timely delivered into disaster fields to perform fast and effective rescue.

Description

technical field [0001] The present invention relates to a positioning system and method, in particular to a mobile terminal positioning system and method suitable for earthquakes and other disasters, capable of effectively and quickly rescuing disaster victims carrying mobile phones in earthquakes and other disasters. Background technique [0002] my country is located at the intersection of two natural disaster zones in the world, at the junction of three major plates, and is an area where earthquakes and other disasters frequently occur. In recent years, natural disasters such as earthquakes have occurred frequently in my country. The Wenchuan earthquake in 2008 and the Ludian earthquake in Yunnan in 2014 caused heavy casualties. Timely search and rescue of survivors buried under the rubble is the key to reducing casualties. The existing emergency search and rescue means mainly include search and rescue dogs, life detectors, etc., but they all have obvious shortcomings: t...

AI Technical Summary

Problems solved by technology

At present, the existing emergency search and rescue methods mainly include search and rescue dogs, life detectors, etc., but they all have obvious shortcomings: the former has short working hours and low efficiency, and the latter has a small search range and poor positioning accuracy

However, the existing base station equipment that can communicate with mobile phones can only effectively detect and analyze mobile phone signals in some situations that require the cooperation of victims, such as making calls, sending text messages or using data services

In a disaster situation, the victim is likely to be incapacitated and unable to operate the mobile phone

In addition, existing devices cannot meet the needs of shielding external interference signals, actively triggering mobile phone signal reselection, identifying victim mobile phone information, supporting efficient positioning algorithms, and displaying positioning information.

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