Station Setup Results - Leica FlexLine plus User Manual

7.2.3
Computation
procedure
Access
Station Setup Result
FlexLine plus, Programs

Station Setup Results

The computation of the station position is done via the Method selected in Enter Station
Data.
If more than the minimum required measurements are performed, the procedure uses
a least squares adjustment to determine the 3D position and averages orientation and
height measurements.
• The original averaged face I and face II measurements are used for the computation
process.
• All measurements are treated with the same accuracy, whether these are measured
in single or dual face.
• Easting and Northing are determined by the least squares method, which includes
standard deviation and improvements for horizontal direction and horizontal
distances.
• The final height (H) is computed from averaged height differences based on the orig-
inal measurements. For the methods Ori. with Coord. and H-Trans the height can be
selected from old, average and new.
• The horizontal direction is computed with the original averaged face I and face II
measurements and the final computed plan position.
Press F4 Compute in the Station Setup Result screen.
This screen displays calculated station coordinates. The final computed results depend
on the Method selected in Enter Station Data.
Standard deviations and residuals for accuracy assessments are provided.

If the instrument height was set to 0.000 in the setup screen, then the station
height refers to the height of the tilting axis.
Description of fields
Field Description
Station Current station ID.
Current instrument height.
hi
Calculated Easting coordinate of the station.
East
Calculated Northing coordinate of the station.
North
Height Calculated Height coordinate of the station.
Current Hz angle with the new orientation.
Hz

Available for Method: H-Trans or Ori. with Coord. with only 1 target
point. Difference between the calculated and measured horizontal
distance from the station to the design target.
Scale Available for Method: Resection and Method: Res.Helm.. The calcu-
lated scale, if available.
Add Pt
To return to the Enter Target Point
screen to enter the next point.
Resid.
To display residuals and to define the
use of points as 1D, 2D or 3D. Refer to
"Target Residuals".
Std.Dev
To display the standard deviation of
the station coordinates and orienta-
tion.
Set
To set the station coordinates and/or
orientation.
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