P0 Instrument station
P1 Known point
P2 Known point
P3 Known point
The following setup methods are available:
Setup method
Description
Orientation with Angle The station is known. Aim at a target to set
the orientation.
Orientation with Coordinates The station and target coordinates are
known. Aim at a target to set the orientation
and height.
Height Transfer The station is known, a new station height
must be computed. Measure to one or more
known targets to compute new height for
the station.
Resection The station is unknown. Measure to two or
more target points to compute station coor-
dinates and orientation. Scale setting is con-
figurable.
Helmert Resection The station is unknown. Measure to two or
more target points to compute station coor-
dinates and orientation. The measured
angles and distances are adjusted, based on
coordinates of a local and global system.
A 2D Helmert transformation is used, with
four (shift x, shift y, rotation and scale) or
three (shift x, shift y, rotation) parameters,
depending on the scale setting in the config-
uration. Points can be defined as 1D, 2D or
3D.
Local Resection The station is unknown. Measure distances
to two points:
•
To the origin (E = 0, N = 0, H = 0) of the
coordinate system
•
To a point the North or East direction of
the coordinate system
Scale and standard deviation are not calcula-
ted.
Each setup method requires different input data and a different number of tar-
get points.
Setup methods
Apps 73
To Next Page
