Device location determination
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United States of America Patent
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Aug 18, 2015
Grant Date -
Jun 18, 2015
app pub date -
Dec 14, 2013
filing date -
Dec 14, 2013
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Abstract
Methods, apparatuses and systems of estimating a location of a device are disclosed. One method includes determining a first position of the device, sensing at least one magnetic anomaly at the first position, estimating a location of the magnetic anomaly relative to the first position by determining a plurality of magnetic properties of the magnetic anomaly based on sensed signals of at least a magnetic sensor, and estimating a second position of the device based on a sensed change in a distance from the magnetic anomaly to the device.
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