Method and apparatus for initialization of a tool via a remote reference source
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United States of America Patent
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Feb 23, 2016
Grant Date -
May 2, 2013
app pub date -
Sep 24, 2012
filing date -
May 22, 2009
priority date (Note) -
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Abstract
A method and an apparatus are provided for determining an orientation of a tool with respect to a reference direction. At least one first signal is indicative of an orientation of a directional reference system with respect to the reference direction. The directional reference system is positioned spaced from the tool. At least one second signal is indicative of a relative orientation of the tool with respect to the directional reference system. The orientation of the tool at the first position is determined in response at least in part to the at least one first signal and the at least one second signal.
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