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13.8
13.8.1
Use in the field
Geoid field file
Create geoid models on
the receiver
Manage...\Coordinate Systems
Geoid Models
Overview
For use on the receiver in the field, geoid field files are created from the geoid model.
The geoid separations in a geoid field file may be used in the field to change between ellip-
soidal and orthometric heights.
Creation:
In LGO with export onto a CompactFlash card or the internal memory of the
receiver.
Extension:
*.gem
Geoid models can be created on the receiver in one of three ways:
1.
Geoid field file on the
CompactFlash card
Here the geoid field file is stored on a CompactFlash card and can be used when
the CompactFlash card is inserted in the receiver. It is recommended for large geoid
field files. This method is explained in this chapter.
2.
Geoid field file in
internal memory of
receiver
Creation
Creation
GPS1200+
Geoid model
on the receiver
Geoid model
on the receiver
312
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