Motion tracking system
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United States of America Patent
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-
Jul 1, 2008
Grant Date -
Jul 22, 2004
app pub date -
Dec 23, 2003
filing date -
Apr 17, 1998
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
Tracking a motion of a body by obtaining two types of measurements associated with the motion of the body, one of the types including acoustic measurement. An estimate of either an orientation or a position of the body is updated based on one of the two types of measurement, for example based on inertial measurement. The estimate is then updated based on the other of the two types of measurements, for example based on acoustic ranging. The invention also features determining range measurement to selected reference devices that are fixed in the environment of the body.
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Cited Art Landscape
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