I¡¯d be interested in hearing more about work with sonic GPS.
A while back, there was a commercial system called ¡°RPS¡± that did this.
It worked really well but the electronics was bulky and it had a large transmitter that was pretty ugly on top of the locomotive. It even had JMRI support:
Unfortunately, the owner passed. Somebody, I don¡¯t recall who, bought the system and was going to try to repackage the transmitter, but I don¡¯t think anything came of that.
Perhaps the time has come for this tech!
Bob
On Sep 7, 2024, at 4:04?PM, Scott Walton via groups.io <jscottwalton@...> wrote:
What about the railway GPS for model railroads (I think there¡¯s a beta test of that now) using a sonic transmitter in the locomotive and several receivers around the room. You can calculate the position in 3-space from the transmission time to each receiver.
¡ª
Bob Jacobsen
rgj1927@...
Bob Jacobsen