Patent ID: 7006816
Filing Date: 2006-02-28
Classification: G01S,H04B

Abstract:
1. A system for locating a mobile terminal, in particular for rescuing a person in distress equipped with the said mobile terminal, the mobile terminal being of a type able to communicate via base stations of at least one radio-communication system, the said location system comprising: at least a device for alerting the mobile terminal, transported by an aircraft and comprising a repeater connected to the first and second antennae, the said first antenna enabling the repeater to communicate with one of the base stations, the said second antenna enabling the repeater to create a specific, limited radio-communication coverage zone, located close to the aircraft, and to communicate with the mobile terminal, if the latter is located in the coverage zone, in such a way as to alert the mobile terminal and to force it to transmit at least a first message; means for analysing at least one radio-communication interface, in such a way as to retrieve the said first message transmitted by the mobile terminal; means for processing the said first message transmitted by the mobile terminal and retrieved by the means for analysing the interface, in such a way as to recover an ID of the mobile terminal; means for sending at least a second message to the mobile terminal whose ID has been recovered, to force it to transmit at least a third message acknowledging receipt and/or answering; and location means for locating the mobile terminal based on the said at least one first message transmitted by the mobile terminal in such a way that the said location means can locate the mobile terminal from the said first message and from the said third message transmitted by the mobile terminal.