Harold.

Go to the ARRL website, and look for technical articles about radio directi=
on finding. This triangulation method is well used to locate radio transmit=
ters.
Light is just a wave at VERY high frequency.

Just my @0.02,
Jean-Paul
AC9GH

> On Jan 26, 2015, at 10:17 AM, Harold Hallikainen <harold@hallikainen.org>=
 wrote:
>=20
> I have an application where I need to determine the positions of
> loudspeakers as XYZ coordinates in a room. It seems that this could be
> done entirely with distance measurements (with a "laser measuring tape').
> If I measure the distance to a point from two known positions, it seems
> that the distances would represent radii of spheres, and there would be a
> circle where they intersect. The point of interest is somewhere on that
> circle. Adding a third measurement from a known point should get us down
> to one point. Can anyone point me to information on such a "navigation
> system?"
>=20
> Thanks!
>=20
> Harold
>=20
>=20
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