Spectra Precision Survey Pro v4.5 Ranger Reference Manual - Manual (Page 234)

Survey Pro Reference Manual
R-226
Ground Coordinates
Survey Projection Mapping Plane Ground… .
The Ground Coordinates screen is used to toggle between grid and
ground coordinates, and to select how to define the origin of the
ground coordinate system.
Projection Definition
: is where you choose how
to represent the mapping plane coordinates.
There are two options:
• Use
Grid Coordinates
: WGS84 geodetic
coordinates will be transformed into
mapping plane zone coordinates.
Horizontal distances on the ground are
usually scaled to the grid.
• Use
Ground Coordinates
: WGS84
geodetic coordinates will be
transformed into ground scaled
coordinates translated to a local origin. Horizontal distances
on the ground are 1:1 on the grid, because the grid is scaled to
the ground.
Ground Coordinates Origin
: is where you select what point to use as
the origin of the ground coordinate system relative to the origin of the
mapping plane zone. You can choose to.
• Origin at mapping plane origin: ground coordinate scale factor
will be applied from the origin of the mapping plane zone.
• Pick point to define origin: ground coordinate scale factor will
be applied from a point selected from the job.
• Key in coordinates to define origin: ground coordinate scale
factor will be applied from a location entered by the user.