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url fix - online edit of handbook/survey/gps.htm

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Philip Sargent
2025-05-11 16:50:00 +01:00
committed by Expo on server
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handbook/survey/gps.htm
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@@ -63,7 +63,7 @@ track log, then record another waypoint at the same place just before you leave
so it's clear to someone examining the track log when you actually left.
</p>
<p>Averaging used to be very important, but today (2025) we have so many GNSS satellites in the sky that ionospheric effects are the significant error. These change slowly over 5 hours or so, so avergaing for a minute or and hour does nothing useful. You would need to average over several days. The solution for a fast fix is <a href="handbook/computing/myphone.html#future">to use RTK</a>.
<p>Averaging used to be very important, but today (2025) we have so many GNSS satellites in the sky that ionospheric effects are the significant error. These change slowly over 5 hours or so, so avergaing for a minute or and hour does nothing useful. You would need to average over several days. The solution for a fast fix is <a href="/handbook/computing/myphone.html#future">to use RTK</a>.
<p>While the GPS is averaging your location, you can do something useful
(like rigging the cave, doing a surface survey from the GPS point to the