Helmet metal mass compensation for helmet-mounted sighting system
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United States of America Patent
Stats
-
Jul 26, 1983
Grant Date -
N/A
app pub date -
Feb 12, 1981
filing date -
Feb 12, 1981
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An electromagnetic system for determining the orientation including position of a helmet worn by a pilot is disclosed having a transmitting antenna for transmitting electromagnetic field vectors, a receiving antenna for sensing the electromagnetic field vectors generated by the transmitting antenna, and a control apparatus responsive to the sensed electromagnetic field vectors and the transmitted electromagnetic field vectors for determining the compensated orientation of the helmet, the compensated orientation relying upon the rotation matrix determined by a previous solution for the orientation of the helmet.
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