Positioning terminal, cell phone search system, cell phone search method, program and server

摘要

PROBLEM TO BE SOLVED: To make it possible to immediately and accurately acquire position information on a victim, which is lying in a building or under rubble which a GPS signal does not reach, by utilizing a feature of a portable cellular phone owned by the victim even when a ground infrastructure such as base stations cannot be utilized in case of a disaster such as an earthquake.SOLUTION: A positioning terminal 1 of a rescue and survival assist system 100 receives a cellular radio wave originating from a portable cellular phone 5, a range-finding signal sent from a positioning satellite 4, and error correction information sent from a multi-function positioning satellite 3. The positioning terminal 1 calculates the position of the positioning terminal 1 on the basis of the range-finding signal and error correction information, and calculates a portable cellular ID and a portable cellular phone distance or portable cellular phone direction on the basis of the cellular radio wave. The positioning terminal 1 calculates the position of the portable cellular phone 5 on the basis of the position of the positioning terminal 1, the portable cellular ID, and the portable cellular phone distance or portable cellular phone direction. The positioning terminal 1 calculates a point, at which the cellular radio wave will be received next, on the basis of the pieces of information, and produces and outputs movement plan data, with which the positioning terminal 1 is guided, with the calculated point as a destination.