Been trying to model the legendary W3CRA site using HFTA. I downloaded the
SRTM 1 arc-second data in a .TIF format from the NASA website. All is
working well except that a few north bearings from the site appear to have
been data-shadowed during the year 2000 space shuttle capture. This shows
as a dead terrain zone between 900 ft to 2200 ft on the hill just north of
the site. That's a huge problem since HFTA heavily depends on the
mid-field terrain data. In researching this effect, apparently quite a few
SRTM tiles require "fill data" from an alternate source.
I figured out how to merge .TIF data image tiles, but does anyone know how
to add fill data back into a .TIF file and exactly what 1 arc-second source
to use? Tnx!
Paul, W9AC
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