Symeo LPR
®
-System
LPR
®
-2DB
Product Documentation
Coordinate
System
Copyright © Symeo 2012
Page 47 of 132
z
y
x
[0,0,0]
Figure 26
– transponder coordinate system
Positions in all four quadrants can be measured in the transponder coordinate system: LPR
calculates the 2D position in the plane spanned by x and y.
Since it is not always possible to mount all the LPR components (LPR-2DB Integral Station,
LPR-2DB Station antennas) in this plane, the deviation of the installation position in "z"
relative to this plane must be specified for all LPR components.
In plane areas the z-position can be estimated directly towards the ground level.
The LPR-2DB Integral Stations must be measured in x-/y- and z-direction.
6.1.2
Reference point of LPR-2DB Integral Station
The position of the measuring point is critical for measuring the LPR-2DB Integral Station.
The measuring point is marked by matting on the stations housing.
In a top view, the measuring point is located at the same level as the antenna patches
(horizontal structures, roughly in the middle of the board portion above the copper reflector).
In the front view, the zero point is located midway between the copper reflectors.
Measurement point
Figure 27
– Position of the measuring point on the LPR-2DB Integral Station
