🚀 go-pugleaf

I remember seeing at a trade show a tracking device that worked on the idea
of having 3-orthogonally mounted coils set up to receive energy that was
transmitted from a local rf source.  By receiving the energy in the three
coils and doing some real-time solving of the simultaneous equations resulting,
you could locate the objects orientation.  I believe the application they
had in mind was for mounting it on a helment or someone's glove, and monitoring
their movements in the "cockpit of the future".

The receiver coil was only about 3cm square and had tiny wires coming from
it to the reciever/processor.  If you think about it, you should be able
to set you solution to the equations for any reference point, and then calculate
your position relative to the reference based upon the zero point.

I don't have any other details, this is just what I remeber seeing and it
has always stuck with me as a rather elegant solution to the tracking 
problem.

Jeff Long

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Capt Jeff Long                         Rome Laboratories, Griffiss AFB, NY
longj@lonex.radc.af.mil (preferred)    Network Design Laboratory
jlong@cassiopeia.radc.af.mil           (315)330-7751 or (DSN)587-7751