Patent ID: 8599011
Filing Date: 2013-12-03
Classification: G08B

Abstract:
1. A rescue system comprising: at least one mobile tag to be carried by a person potentially in need of rescue; one or more fixed devices, each of said one or more fixed devices in radio frequency communication with said at least one mobile tag; said rescue system configured for determining mobile tag signal property measurements indicative of electromagnetic propagation between said at least one mobile tag and said one or more fixed devices; said rescue system further comprising a database, said rescue system configured for storing said mobile tag signal property measurements in said database in association with a path variable indicative of a path taken by said at least one mobile tag; said rescue system further comprising a rescue tag to be carried by a rescuer; each of said one or more fixed devices in radio frequency communication with said rescue tag; said rescue system configured for determining rescue tag signal property measurements indicative of electromagnetic propagation between said rescue tag and said one or more fixed devices; said rescue system configured for comparing said rescue tag signal property measurements with said mobile tag signal property measurements from said database to determine a comparison data set indicating a relative position of said rescue tag to said path taken by said at least one mobile tag.