Chapter 5 Learn Geode Connect for iPad and iPhone 49
Owner's Manual
SBAS
This specifies which SBAS
satellites the Geode should
use for GPS correction.
Usually, selecting Auto
is sufficient because the
various SBAS services cover
different geographical
areas. However, there are
some areas where these
services overlap (see map
below).
For example, if you are
collecting corrected
GPS positions in the
Northeastern United
States, the Geode may be
receiving SBAS corrections
from WAAS or EGNOS. If
the receiver is set to Auto,
it may even jump back and
forth between the two.
The two services use different reference datum or models.
Switching between them can cause significant error
between different points of data.
In areas of overlap, the best practice is to select a specific
SBAS service the Geode should accept corrections data
from.
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