[talk-au] new toy found by son

John Smith deltafoxtrot256 at gmail.com
Thu Oct 1 13:30:30 BST 2009


2009/10/1  <b.schulz.10 at scu.edu.au>:
> Accelerometers would be an excellent solution for mapping tunnels though.
> Especially since you're only talking about a short-ish time span and you can
> potentially have 2 accurate calibration points (one at each end of the
> tunnel). I guess if the accelerometer could be mounted in some form of
> suspended cage to dampen high frequency noise it would be quite accurate.

Or just use a phone with AGPS from the phone network, when I have 3G
connectivity on the phone I usually get 2m accuracy and works inside
buildings etc. Now we just need 3G connectivity Australia wide :D




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