Traverse; Overview - Leica FlexLine plus User Manual

7.14
7.14.1

Description
2D Helmert
transformation
Compass rule
Transit rule

Traverse

step-by-step
Traverse options
FlexLine plus, Programs
Traverse

Overview

The program Traverse can be trialled 15 times. After 15 trials, it is necessary to enter
a licence code.
Traverse is a program used to establish control networks whereby other survey oper-
ations such as topographic surveys or point stake outs can be completed.
The Traverse methods include 2D Helmert transformation, compass rule and transit
rule.
A Helmert transformation is calculated based on two control points. These must be
the start point and the end, or closing, station. Shift, rotation and scale factor will be
computed and applied to the traverse.
Starting a traverse without an initial backsight measurement will automatically result
in a Helmert transformation.
The coordinate misclosure will be distributed with respect to the length of the traverse
legs. The compass rule assumes that the biggest error comes from the longest trav-
erse observations. This method is suitable when the precision of the angles and
distances are approximately equal.
The coordinate misclosure will be distributed with respect to the coordinate changes
in Easting and Northing. Use this method if the angles were measured with a higher
precision than the distances.
1. Start and configure Traverse.
2. Enter station data.
3. Select starting method.
4. Measure a backsight point or go directly to step 5..
5. Measure a foresight point.
6. Repeat for the number of sets.
7. Move to the next station.
• It is also possible to observe sideshots and check points during the traverse,
however, check points are not included in the traverse adjustment.
• At the end of the traverse, results are displayed and an adjustment may be calcu-
lated if desired.
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