[OSM-talk] Mapping and surveying long road tunnels
sxpert at sxpert.org
Thu Mar 22 14:45:36 GMT 2007
Robert Hart a écrit :
> You can't use any published map sources that you
> consider reliable as it is too new for o-o-cop maps.
> Any thoughts?
> I guess the options are persuade the designers/contractor to provide a
> drawing or other data, that can be used, or getting out the theodolite.
> For a slightly less accurate approach (afterall, I hope nobody is going
> to try and do any groundworks based on our data - so who cares), you
> could try taking bearings with a compass at regular intervals. It might
> depend on how the tunnel is lined whether the compass works. Blackadder
> might know.
or, we could use IMUs and some kalmann filtering
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