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[svn r6514] Mainly link fettling; also added Makefile into CVS, and put in survey data stuff

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dave
2004-09-20 00:22:14 +02:00
parent 1faaeeeff3
commit c2a2024f5c
19 changed files with 379 additions and 175 deletions
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24
handbook/survey/gps.htm
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@@ -57,6 +57,30 @@ can't select this particular set, but it is very important that you <u>write
down what was actually used</u>, since different grid systems can give
results up to a couple of kilometres different!</p>
<p>If your GPS doesn't support Austrian coordinates out of the box, then you can set it up as a "User Grid" using some or all of the following cryptic runes:</p>
<div style="background-color: #BDB">
<table>
<tr>
<th>Ellipsoid:</th><td>Austrian (Bessel 1841)<br />
a = 63377397.155m (&Delta;A = 739.845)<br />
1/f = 299.1528128 (&Delta;f x 10,000 = 0.10037428)
</td></tr>
<tr>
<th>Datum:</th>
<td>Austria MGI (Hermannskogel)</td></tr>
<tr><th>Projection:</th><td>Transverse Mercator (BMN zone M31)</td></tr>
<tr><th>Grid parameters:</th><td>Central meridian 13&deg;20'E<br />
False easting 450km<br />
No additional scaling<br />
Grid boundaries at 11&deg;50' and 14&deg;50'</td></tr>
<tr><th>EFEC coordinate conversion equation with respect to WGS84:</th>
<td>Offsets &Delta;x = -575m, &Delta;y = -93m, &Delta;z = -466m<br />
Rotations &omega;<sub>x</sub> = 5.1"; &omega;<sub>y</sub> = 5.1", &omega;<sub>z</sub> = 5.2"<br />
Scaling -2.5ppm
</td></tr></table>
</div>
<p>Write down the figure that the GPS gives for each waypoint at the time
(just in case some failure loses the data from the GPS memory). That's all
you need to do at the cave. Get the GPS data downloaded to a computer next