Symeo LPR
®
-System
LPR
®
-2DB
Product Documentation
Coordinate
System
Copyright © Symeo 2012
Page 46 of 132
6 Coordinate System
The LPR-2DB Integral Station and the antennas of the mobile stations must be surveyed.
6.1 Survey Instructions for the LPR-2DB Integral Station
The Integral Stations are supplied already preassembled (hood + base) and with the bracket
separate. Figure 25 shows various views of the assembled LPR-2DB Integral Station
including the mounting bracket
Figure 25
– Complete LPR-2DB Integral Station including mounting bracket
6.1.1
Coordinate system of LPR-2DB Integral Station
The accuracy of the position output depends in large part on the exact recording of the
positions of the LPR-2DB Integral Station. Accordingly, the positions of the installed stations
must be calibrated to a tolerance of +/- 2 cm (in each direction). At the same time, the
orientation of each Integral Station in the x-y direction is also recorded. The inclination of the
stations is not recorded.
LPR works with a Cartesian coordinate system, which is spanned by the x-y plane (see
Figure 9). The positions of the Integral Stations are identified in this coordinate system. By
default, the coordinate system has a positive effective direction.
