发明名称 Two way tracking system and method using an existing wireless network
摘要 The present invention concerns a method and a system for tracking an object, person or animal, the object, person or animal being provided with a tracking wireless transceiver. The system includes a receiver for receiving an indication that the object, person or animal needs to be tracked; a wireless radio link for wirelessly communicating with the tracking wireless transceiver; a device for estimating coordinates of the object, person or animal based on a location of one or more sites communicating with the tracking wireless transceiver; and at least one wireless device provided with the object, person or animal, for wirelessly communicating with the tracking wireless transceiver. The present invention can be useful for communicating with the object, person or animal to be tracked, and is a more flexible system over the prior art systems.
申请公布号 US2001040506(A1) 申请公布日期 2001.11.15
申请号 US20010777796 申请日期 2001.02.06
申请人 BOULAY ANDRE ERIC;NELSON ROBERT 发明人 BOULAY ANDRE ERIC;NELSON ROBERT
分类号 G01S19/48;B60R16/023;B60R25/102;B60R25/33;G01S19/16;G01S19/36;(IPC1-7):G08B1/08 主分类号 G01S19/48
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