On 25/02/19 21:53, Linus Torvalds wrote:
On Mon, Feb 25, 2019 at 12:49 PM Berthold Stoeger
<[email protected]> wrote:
A path is interesting - does that mean that GPS works under water?
No. GPS signals are blocked by a couple of cm of water.
There _have_ been noises about people doing gps buoys, but honestly,
that sounds a bit theoretical.
In practice, I suspect the only way you'd have a path is from manual
entry of a couple of points in between the entry/exit points.
I guess there's always a Subsurface user for every conceivable case ;-)
I do, on several occasions, record our GPS track for some of our dives,
particularly when doing habitat mapping. What we do is tow a surface
marker buoy on which a GPS receiver/logger is placed. Despite the angle
of the cable that connects the SMB to the scooter/diver, this works
really well for depths down to 25/30 m...
We then use the GPS tracks to georeference pictures, videos and other
observations. So yes, I'm up for assigning a GPS track to the dives...
Cheers:
Pedro
_______________________________________________
subsurface mailing list
[email protected]
http://lists.subsurface-divelog.org/cgi-bin/mailman/listinfo/subsurface
