Hi Pascal,
there is some strange thing we saw. We did some simulations for eastern Norway
where the meteo guys from University of Bergen live. They are in Hildesheim
right now and think about using Paparazzi for measurement (we met Prof. Reuder
outside the Braunschweig building before going to DLR last summer, he started
the EU COST paper work).
We did a flight plan for Bergen (N 60.382817 E 5.330858) and loaded the SRTM.
There is no SRTM info in the GCS for Bergen area, it shows 32768m. If you turn
on the UTM grid on in GCS and walk south with the mouse, it will appear at some
UTM grid border. I remembered some strange UTM behaviour and saw that
http://www.dmap.co.uk/utmworld.htm
In eastern Norway and Svalbard (which is intersting to them...) the grid is
different http://www.fmnh.helsinki.fi/english/botany/afe/map/utm.htm
Most UTM converters are not aware of that and give grid 31 for the region. This
one seems to do it http://www.dmap.co.uk/ll2tm.htm If you enter values around
the borders (e.g. N 56'0 E 5'0 and 55'59 E 5'0) you will have another grid and
a different eastern reading as it starts at a different longitude.
Could it be that this utm "anomaly" makes the SRTM go away?
See you,
Martin
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