Introduction User manual
1.8.1 Relative survey
■
The relative survey allows measurement of track parameters like stationing, superelevation,
gauge, twist and curvature.
■
The relative survey also enables the track surroundings to be surveyed using the profiling
equipment integrated into the track trolley TGS FX.
■
The track environment survey may be carried out with the Profiler FX or a high speed
laser scanner (see Section 1.5.3, “High-speed laser scanner for the configuration GRP/IMS
5000” on page 16 for list of supported laser scanners).
■
Complete information about these options is available in the "Amberg Rail 3.0" manuals.
1.8.2 Absolute survey
■
Absolute survey by total station: A prism is installed onto the track trolley and measured with
a Leica total station during the track survey in order to get the georeferencing information.
Please note that the total station must be equipped with the function automatic target
recognition (ATR), prism lock and robotics licence (Geocom).
■
Absolute survey by GNSS: Instead of a Leica TPS, a Leica GNSS system can be used for
absolute surveying. The GNSS antenna is installed on a pole on the track trolley and provides
the georeferencing information.
■
Absolute survey with IMU: The track alignment can also be measured with the aid of an IMU
(Inertial Measurement Unit). By additionally measuring control points in a regular interval a
transformation into an absolute coordinate system is possible.
■
During the track measurement, the absolute coordinates of the track are determined.
■
Based on the measured coordinates of the prism (georeferencing by total station) or the
GNSS antenna or the IMU device and the readings of the internal sensors (track gauge and
super elevation), the integrated software computes the coordinates of the track axis.
■
For the configuration GRP 3000, an automatic profile measurement device, the Profiler FX,
is installed for the track environment survey. This combination also enables the measured
profile points to be converted into absolute coordinates. Furthermore, the Profiler FX can be
used to measure Control Points (CP) and any other object of interest.
■
For the GRP/IMS 5000, a high speed laser scanner is installed for the track environment
survey. This combination also enables the measured profile points to be converted into
absolute coordinates.
■
Complete information about the operation is available in the "Amberg Rail 3.0" manuals.
1.8.3 Stop&Go Function (Static measurements)
■
The track trolley is stopped at the desired place on the track.
■
A measurement of the track geometry and position is then taken (with the TPS total station
or GNSS and internal sensors). Afterwards, an automatic profile measurement is taken if
required (configuration GRP/IMS 3000 and GRP 5000 only).
■
Evaluation of the sensor values (track gauge and superelevation) automatically converts the
measured values of the track into the absolute coordinate system (only in 'absolute survey'
mode).
■
The system software clearly indicates the measured values and stores these in the
measurement file on the hard disk.
1.8.4 Kinematic Measurements
Page 18 of 114 © Amberg Technologies AG, 2023
To Next Page
Loading...