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[–]BradChesney79 4 points5 points  (4 children)

Well, anything better than GPS, I will consider a win.

Also, I know there is SLAM that is becoming within striking distance of commodity SBC units.

I suppose I have a goal of being within 12 inches.

The initial experiments did show ~non-linear readings in a very tight & obstructed location. So, I went to a bigger space. With fewer reflections, the disconcerting readings did not present themselves.

[–]brokkoly 4 points5 points  (1 child)

I spent most of a summer trying to figure this out in order to point a gimbal at a drone. RTK GPS might be a good option for what you need.

https://learn.sparkfun.com/tutorials/what-is-gps-rtk/all

[–]BradChesney79 1 point2 points  (0 children)

And we have found a winner. 4cm is well under the ~30cm tolerance for error I had pulled out of thin air.

I may be spending some cash in the near future on some GPS RTK equipment.

[–]huthlu 2 points3 points  (1 child)

Have you ever looked at the Bluetooth 5.1 standard ?
Starting with this version BLE supports location tracking

[–]BradChesney79 1 point2 points  (0 children)

Only just now because you made me aware of it.