[TowerTalk] terrain profile algorithm
Ian White GM3SEK
gm3sek at ifwtech.co.uk
Sat Jun 16 10:43:33 PDT 2012
Jim Lux wrote:
>> If may be easier than you think, because HFTA already makes a linear
>> extrapolation between data points, regardless of horizontal separation.
>Does it? or does it treat each segment as a flat plate a'la the paper
>by Breakall, et al.
>If it were doing a raytracing physical optics approach, then yes, you'd
>cast the ray to the point of intersection with the surface, figure out
>the angle, determine the reflection, and move on.
>But I seem to recall that HFTA does something more like GTD.
It's been a few years now, but in correspondence with Dean Straw about
the general topic of creating data sets, I don't recall any mention of
conflicts arising from the internal model.
73 from Ian GM3SEK
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