On Tue, Dec 29, 2009 at 12:01 AM, Liz <span dir="ltr"><<a href="mailto:edodd@billiau.net">edodd@billiau.net</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">There are many sources of error in SRTM and GPS and barometric height<br>
measures.<br>
First of all<br>
Height compared to what?<br></blockquote><br>WGS84 adjusted by the deviation between
WGS84 and EGM96 at the lat/lon of the measurement? Would that work?<br><br><div class="gmail_quote"><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
A fast bicycle descent wrecks the height calculation because the processor is<br>
too slow.<br></blockquote><div><br>Could that be resolved by asking it to output raw WGS84 altitudes and then doing the calculations to adjust it to MSL offline?<br><br>Just questions. I don't know enough about this stuff to have the answers.</div>
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