From 5548ddf004c35fee82ca516468ad2e3e190f395e Mon Sep 17 00:00:00 2001 From: Philip Sargent Date: Sun, 11 May 2025 16:50:00 +0100 Subject: [PATCH] url fix - online edit of handbook/survey/gps.htm --- handbook/survey/gps.htm | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/handbook/survey/gps.htm b/handbook/survey/gps.htm index 11ba9424c..e6b42bd84 100644 --- a/handbook/survey/gps.htm +++ b/handbook/survey/gps.htm @@ -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.

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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 to use RTK. +

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 to use RTK.

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