Topcon mmGPS 3D Paver, Reference Manual, Page: 99 / 288

GPS Localization
P/N 7010-0781
3-29
Figure 3-23 illustrates the factor needed for a plane surface model.
Figure 3-23. Flat Plane Surface Diagram
3DMC accurately measures the point directly below the sensor, but
does not compensate for a slant error of the sensor mast. Therefore,
for a more accurate measurement, keep the mast as vertical as
possible when measuring the point.
1. Press
Topcon Logo File Surfaces Working
or
Reference
and press
New
. Enter and select the following information for the
new surface file. Press
Next
(Figure 3-24).
• Configuration name – enter a name for the file.
• Surface type – select flat plane surface (no slope).
Figure 3-24. Create New Surface File
Existing Ground
Existing Ground
Sur face Plane Surface Pla
ne
Surface Plane
Sur
face Plane
Sur
face
Pla
ne
Sur
face Plane
Elevation Reference Point
0%
0%
1a
1b 1c