SYSTEM AND METHOD FOR LOCATING A RADIO TAG
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United States of America Patent
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Issued Date -
Feb 18, 2016
app pub date -
Aug 18, 2014
filing date -
Aug 18, 2014
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Abandoned
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Abstract
A system comprises a target node having an unknown location and at least three reference nodes within communication range of the target node. Each of the reference nodes has a known location. At least one of the reference nodes is configured to initiate a two-way time of flight transaction with one or more of the other reference nodes by transmitting a respective request to the one or more other reference nodes. Each of the reference nodes is configured to transmit a reply in response to a received request. The target node is configured to observe the request and reply of each two-way time of flight transaction and to determine a respective time differential between when the target node received each respective request and its corresponding reply of each observed two-way time of flight transaction.
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