Spectra Precision Survey Pro 3.80 Recon GPS Reference Manual - Manual (Page 43)

Survey Menu – RTK
43
Note: This delete function cannot be undone. Also, you cannot delete
system database records. If you select a protected record, you will be
prompted that the record cannot be deleted.
.H\ ,Q 3DUDPHWHUV ! opens the Projection Key In Setup screen where
you can create a custom map projection zone, ellipsoid and datum.
)LQLVK accepts the currently selected zone, sets the projection record
and writes the raw data.
Projection Key In Setup
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The Projection Key In Setup wizard is used to generate a custom
mapping plane zone.
Zone Type : is where you select what kind of map
projection to use for the new zone. You can choose:
•
Transverse Mercator.
•
Lambert 1 Parallel
•
Lambert 2 Parallel
•
Stereographic / Oblique Stereographic
•
Oblique Mercator Angle
Datum Type : is where you select what kind of datum to
use for the new zone. You can choose:
•
Pick from database . Choose this option to add a data
base datum and ellipsoid to the new zone
•
Custom Molodensky . Choose this option to use a
custom 3-parameter datum transformation, with either a custom
ellipsoid or a data base ellipsoid.
•
Custom Similarity . Choose this option to use a 7-parameter datum
transformation, with either a custom ellipsoid or a data base
ellipsoid.
Grid and Azimuth Parameters : is where you select the grid azimuth
and the positive coordinate direction.