Leica Geosystems TPS1100 Professional Series - Reference Manual - Manual (Page 258)

258
TPS1100 - Appl. Prog. Ref. Manual 2.2.0en
Local system - Plane definitions
Vertical Plane
A vertical plane is defined by 2
points.
The X-axis of the plane starts in the
first measured point and points to the
right (seen from the instrument
station). It is horizontal.
The Z-axis is parallel to the
instrument zenith.
The Y-axis is perpendicular to the
plane. Offsets are applied in the
direction of the Y-axis.
For horizontal planes the
positive Z-axis points in the
direction of the instrument’s zenith.
X- and Y-axes are horizontal.
1
100pr92
P1 X
Z
Tilted Plane
For "local" planes defined by 3 or
more points the Z-axis is defined by
the steepest grade of the plane.
The Y-axis is the normal vector of the
plane (+Y is away from the
instrument) and the X-axis is
perpendicular to Z and Y and
consequently horizontal. Offsets are
applied in the direction of the Y-axis.
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N
E
H
Y
P2
Z
Y
X