Three dimensional tracking system employing a rotating field
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United States of America Patent
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Jul 8, 1997
Issued Date -
N/A
app pub date -
Feb 8, 1995
filing date -
Jun 16, 1992
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
Apparatus for determining the position and orientation of a helmet worn by a crew member in a vehicle including a generator, associated with the vehicle, which produces a rotating magnetic and electric field of fixed strength, orientation and frequency within at least a portion of the vehicle. The apparatus also includes a plurality of detectors each of which generates a signal proportional to at least one of the electric or magnetic fields at least one point associated with the helmet and calculation circuitry responsive to the signal for ascertaining the coordinates of the at least one point with respect to the generator and for determining the position and orientation of the helmet.
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