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?"

Thanks!

Harold


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